diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b1c1bfd..b7ecfd6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,6 +2,8 @@
 
 Thanks for helping build the catalog. There are two main ways to contribute: **adding/updating model data**, and **improving the site itself**.
 
+The formal catalog convention is the [Model Parameters convention](docs/model-parameters-schema.md).
+
 ## Adding or updating a model
 
 1. **Pick the filename.** API-key models are bare; subscription models get a `-subscription` suffix.
@@ -33,6 +35,7 @@ Thanks for helping build the catalog. There are two main ways to contribute: **a
    - `only`: object (or array of objects) of `path: value-or-array`. The parameter applies only when _all_ listed paths match.
    - `except`: object (or array of objects) of `path: value-or-array`. The parameter does _not_ apply when any of the listed conditions match.
    - You can also use `{ not: <value> }` to say "any value except this one".
+   - See the [schema doc](docs/model-parameters-schema.md#applicability) for the exact rule syntax and evaluation semantics.
 
 6. **Auth-type rules of thumb:**
    - **`api_key`:** list parameters from the official API reference. Don't invent ones the API doesn't accept.
diff --git a/README.md b/README.md
index 7651696..bd9bd05 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,10 @@ You can access this data through an API.
 curl https://modelparameters.dev/api/v1/models.json
 ```
 
+The catalog follows the [Model Parameters convention](docs/model-parameters-schema.md).
+The generated JSON Schema is available at
+`https://modelparameters.dev/api/v1/schema.json`.
+
 ## Adding a model or a parameter
 
 See [CONTRIBUTING.md](CONTRIBUTING.md). The short version:
diff --git a/docs/model-parameters-schema.md b/docs/model-parameters-schema.md
new file mode 100644
index 0000000..0d5093d
--- /dev/null
+++ b/docs/model-parameters-schema.md
@@ -0,0 +1,174 @@
+# Model Parameters Convention
+
+The Model Parameters Schema (MPS) convention is the JSON/YAML shape used by
+modelparameters.dev to describe the request parameters available for a specific
+provider, auth type, and model.
+
+This catalog is metadata. It describes knobs a consumer can put into an outbound
+model request, such as `temperature`, `top_p`, `max_tokens`, or
+`thinking.type`. It does not describe API transport capabilities, proxy behavior,
+authentication flows, endpoint compatibility, pricing, or UI control types.
+
+The public runtime sources are:
+
+- `https://modelparameters.dev/api/v1/models.json`
+- `https://modelparameters.dev/api/v1/schema.json`
+
+## Catalog Entry
+
+Each entry describes exactly one provider/auth/model tuple and its available
+parameters.
+
+```json
+{
+  "provider": "anthropic",
+  "authType": "api_key",
+  "model": "claude-haiku-4-5",
+  "params": [
+    {
+      "path": "top_p",
+      "type": "number",
+      "label": "Top P",
+      "description": "Controls nucleus sampling by limiting generation to tokens whose cumulative probability reaches this value.",
+      "default": 1,
+      "range": { "min": 0, "max": 1, "step": 0.01 },
+      "group": "sampling",
+      "applicability": {
+        "except": [{ "thinking.type": ["adaptive", "enabled"] }, { "temperature": { "not": 1 } }]
+      }
+    }
+  ]
+}
+```
+
+Conventions:
+
+- `provider`, `authType`, and `model` identify exactly one model route.
+- `provider` is a kebab-case slug.
+- `model` is the provider-native model id without path separators. It may
+  contain dots or colons when the upstream model id does.
+- `authType` is `api_key` or `subscription`.
+- `params` is the non-empty list of parameters for that exact route.
+- `path` is a snake_case dot path into stored params and outbound request params.
+- `stream` is reserved for API-level streaming capability metadata and is not a
+  valid MPS parameter path.
+- `type` is the semantic data type, not a UI control kind.
+- `label` is user-facing copy.
+- `description` explains the raw provider parameter.
+- `default` is the provider default to display when known.
+- `values` is required for `enum` and is allowed only for finite choices.
+- `range` describes numeric bounds and optional step.
+- `group` is a semantic grouping for ordering and display.
+- `applicability` is optional. Omitted means always available.
+
+## Parameter Scope
+
+MPS entries should describe only parameters the user or consumer can configure
+for the selected provider/auth/model tuple.
+
+For `authType: api_key`, list parameters from the official provider API
+reference. Do not invent request fields the upstream API does not accept.
+
+For `authType: subscription`, list user-facing toggles and presets the consumer
+can actually set. Skip implementation details needed only by the subscription
+adapter.
+
+Do not model transport or platform capabilities as parameters. Examples that do
+not belong in `params`:
+
+- streaming support
+- proxy or passthrough behavior
+- OAuth or API key setup details
+- fallback behavior
+- pricing and rate limits
+- UI-only control metadata
+
+## Applicability
+
+`applicability` controls whether a parameter is available for the current draft
+or request params.
+
+The convention uses two top-level keys:
+
+- `only`: the parameter is available only when the rule matches.
+- `except`: the parameter is unavailable when the rule matches.
+
+Use at least one of `only` or `except`.
+
+## Rule Shape
+
+A rule is either:
+
+- one non-empty match object
+- a non-empty array of match objects
+
+Array rules use OR semantics. A single match object uses AND semantics.
+
+```json
+{
+  "except": [{ "thinking.type": ["adaptive", "enabled"] }, { "temperature": { "not": 1 } }]
+}
+```
+
+This means: disable the parameter when `thinking.type` is `adaptive` or
+`enabled`, or when `temperature` exists and is not `1`.
+
+## Match Values
+
+Each match key is a snake_case dot path. Each match value uses one of:
+
+- JSON primitive: string, number, boolean, or null
+- non-empty array of JSON primitives
+- `{ "not": <primitive or non-empty primitive array> }`
+
+Examples:
+
+```json
+{ "thinking.type": "enabled" }
+```
+
+```json
+{ "thinking.type": ["adaptive", "enabled"] }
+```
+
+```json
+{ "temperature": { "not": 1 } }
+```
+
+## Evaluation Semantics
+
+Consumers evaluate rules against the current params object after dot-path
+expansion.
+
+For a normal match:
+
+- primitive value matches by JSON equality
+- array value matches if any primitive item equals the actual value
+- missing paths do not match
+
+For `{ "not": value }`:
+
+- missing paths do not match
+- present paths match when the actual value is not equal to `value`
+
+For a parameter spec:
+
+1. If `only` is present and does not match, the parameter is unavailable.
+2. If `except` is present and matches, the parameter is unavailable.
+3. Otherwise the parameter is available.
+
+## Adding A New Rule
+
+Prefer expressing provider behavior with the existing `applicability` syntax.
+
+Introduce new convention syntax only when a provider rule cannot be represented
+with:
+
+- exact match
+- one-of match
+- negated match
+- OR of match objects
+- AND within one match object
+
+When extending the language, update this document and the generated catalog
+format together.
diff --git a/models/anthropic/claude-3-5-haiku-20241022.yaml b/models/anthropic/claude-3-5-haiku-20241022.yaml
new file mode 100644
index 0000000..96f8fa8
--- /dev/null
+++ b/models/anthropic/claude-3-5-haiku-20241022.yaml
@@ -0,0 +1,62 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-5-haiku-20241022
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
diff --git a/models/anthropic/claude-3-5-haiku-latest.yaml b/models/anthropic/claude-3-5-haiku-latest.yaml
new file mode 100644
index 0000000..05b9584
--- /dev/null
+++ b/models/anthropic/claude-3-5-haiku-latest.yaml
@@ -0,0 +1,62 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-5-haiku-latest
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
diff --git a/models/anthropic/claude-3-5-sonnet-20241022.yaml b/models/anthropic/claude-3-5-sonnet-20241022.yaml
new file mode 100644
index 0000000..5696d46
--- /dev/null
+++ b/models/anthropic/claude-3-5-sonnet-20241022.yaml
@@ -0,0 +1,62 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-5-sonnet-20241022
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
diff --git a/models/anthropic/claude-3-5-sonnet-latest.yaml b/models/anthropic/claude-3-5-sonnet-latest.yaml
new file mode 100644
index 0000000..e26bf93
--- /dev/null
+++ b/models/anthropic/claude-3-5-sonnet-latest.yaml
@@ -0,0 +1,62 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-5-sonnet-latest
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
diff --git a/models/anthropic/claude-3-7-sonnet-20250219.yaml b/models/anthropic/claude-3-7-sonnet-20250219.yaml
new file mode 100644
index 0000000..8c5f5ab
--- /dev/null
+++ b/models/anthropic/claude-3-7-sonnet-20250219.yaml
@@ -0,0 +1,84 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-7-sonnet-20250219
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-3-7-sonnet-latest.yaml b/models/anthropic/claude-3-7-sonnet-latest.yaml
new file mode 100644
index 0000000..9a9bdb0
--- /dev/null
+++ b/models/anthropic/claude-3-7-sonnet-latest.yaml
@@ -0,0 +1,84 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-7-sonnet-latest
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-3-opus-20240229.yaml b/models/anthropic/claude-3-opus-20240229.yaml
new file mode 100644
index 0000000..9de2c57
--- /dev/null
+++ b/models/anthropic/claude-3-opus-20240229.yaml
@@ -0,0 +1,62 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-opus-20240229
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
diff --git a/models/anthropic/claude-3-opus-latest.yaml b/models/anthropic/claude-3-opus-latest.yaml
new file mode 100644
index 0000000..8ebe076
--- /dev/null
+++ b/models/anthropic/claude-3-opus-latest.yaml
@@ -0,0 +1,62 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-3-opus-latest
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
diff --git a/models/anthropic/claude-haiku-4-5-20251001.yaml b/models/anthropic/claude-haiku-4-5-20251001.yaml
new file mode 100644
index 0000000..392ad3b
--- /dev/null
+++ b/models/anthropic/claude-haiku-4-5-20251001.yaml
@@ -0,0 +1,84 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-haiku-4-5-20251001
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-haiku-4-5-subscription.yaml b/models/anthropic/claude-haiku-4-5-subscription.yaml
deleted file mode 100644
index e4566c1..0000000
--- a/models/anthropic/claude-haiku-4-5-subscription.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
-provider: anthropic
-authType: subscription
-model: claude-haiku-4-5
-params:
-  - path: response_style
-    type: enum
-    label: Response style
-    description: Conversation tone preset.
-    default: normal
-    values: [normal, concise, explanatory, formal]
-    group: output_format
-  - path: artifacts
-    type: boolean
-    label: Artifacts
-    description: Open long outputs in the side panel.
-    default: true
-    group: tooling
diff --git a/models/anthropic/claude-haiku-4-5.yaml b/models/anthropic/claude-haiku-4-5.yaml
index 40ed6be..98ce128 100644
--- a/models/anthropic/claude-haiku-4-5.yaml
+++ b/models/anthropic/claude-haiku-4-5.yaml
@@ -10,23 +10,31 @@ params:
     default: 4096
     range:
       min: 1
-      max: 8192
     group: generation_length
   - path: temperature
     type: number
     label: Temperature
-    description: Controls randomness in sampling.
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
     default: 1
     range:
       min: 0
       max: 1
       step: 0.1
     group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
   - path: top_p
     type: number
     label: Top P
-    description: Nucleus sampling cutoff.
-    default: 0.999
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
     range:
       min: 0
       max: 1
@@ -34,29 +42,43 @@ params:
     group: sampling
     applicability:
       except:
-        temperature:
-          not: 1
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
   - path: top_k
     type: integer
     label: Top K
-    description: Limits sampling to the top K most likely tokens.
+    description: Limits token sampling to the top K most likely next tokens.
     default: 0
     range:
       min: 0
     group: sampling
-  - path: stop_sequences
-    type: string
-    label: Stop sequences
-    description: Up to 4 custom stop strings.
-    group: sampling
-  - path: stream
-    type: boolean
-    label: Stream
-    description: Stream tokens incrementally.
-    default: false
-    group: output_format
-  - path: system
-    type: string
-    label: System prompt
-    description: System prompt providing context and instructions to the model.
-    group: provider_metadata
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-haiku-4-subscription.yaml b/models/anthropic/claude-haiku-4-subscription.yaml
new file mode 100644
index 0000000..d231c53
--- /dev/null
+++ b/models/anthropic/claude-haiku-4-subscription.yaml
@@ -0,0 +1,84 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: subscription
+model: claude-haiku-4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-haiku-4.yaml b/models/anthropic/claude-haiku-4.yaml
new file mode 100644
index 0000000..d1ce197
--- /dev/null
+++ b/models/anthropic/claude-haiku-4.yaml
@@ -0,0 +1,84 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-haiku-4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-opus-4-6.yaml b/models/anthropic/claude-opus-4-6.yaml
new file mode 100644
index 0000000..af30e0c
--- /dev/null
+++ b/models/anthropic/claude-opus-4-6.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-opus-4-6
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-opus-4-7-subscription.yaml b/models/anthropic/claude-opus-4-7-subscription.yaml
deleted file mode 100644
index f88d2b3..0000000
--- a/models/anthropic/claude-opus-4-7-subscription.yaml
+++ /dev/null
@@ -1,41 +0,0 @@
-# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
-provider: anthropic
-authType: subscription
-model: claude-opus-4-7
-params:
-  - path: response_style
-    type: enum
-    label: Response style
-    description: Preset that nudges Claude's tone and verbosity. Selected from the conversation menu.
-    default: normal
-    values: [normal, concise, explanatory, formal]
-    group: output_format
-  - path: extended_thinking
-    type: boolean
-    label: Extended thinking
-    description: Toggle visible extended-thinking output in the conversation UI.
-    default: false
-    group: reasoning
-  - path: artifacts
-    type: boolean
-    label: Artifacts
-    description: Render code, documents, and other long-form output in the side panel.
-    default: true
-    group: tooling
-  - path: web_search
-    type: boolean
-    label: Web search
-    description: Allow Claude to search the live web during the conversation.
-    default: false
-    group: tooling
-  - path: projects
-    type: boolean
-    label: Projects
-    description: Attach the conversation to a project with persistent context and uploaded files.
-    default: false
-    group: tooling
-  - path: personal_preferences
-    type: string
-    label: Personal preferences
-    description: Free-form preferences applied to every conversation (set in profile).
-    group: provider_metadata
diff --git a/models/anthropic/claude-opus-4-7.yaml b/models/anthropic/claude-opus-4-7.yaml
index f26b70d..b78228d 100644
--- a/models/anthropic/claude-opus-4-7.yaml
+++ b/models/anthropic/claude-opus-4-7.yaml
@@ -10,12 +10,13 @@ params:
     default: 4096
     range:
       min: 1
-      max: 64000
     group: generation_length
   - path: temperature
     type: number
     label: Temperature
-    description: Controls randomness. Lower values make outputs more focused and deterministic; higher values make outputs more varied.
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
     default: 1
     range:
       min: 0
@@ -24,12 +25,16 @@ params:
     group: sampling
     applicability:
       except:
-        thinking.type: [adaptive, enabled]
+        thinking.type:
+          - adaptive
+          - enabled
   - path: top_p
     type: number
     label: Top P
-    description: Nucleus sampling. Consider tokens whose cumulative probability reaches this value.
-    default: 0.999
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
     range:
       min: 0
       max: 1
@@ -37,7 +42,9 @@ params:
     group: sampling
     applicability:
       except:
-        - thinking.type: [adaptive, enabled]
+        - thinking.type:
+            - adaptive
+            - enabled
         - temperature:
             not: 1
   - path: top_k
@@ -50,45 +57,15 @@ params:
     group: sampling
     applicability:
       except:
-        thinking.type: [adaptive, enabled]
-  - path: stop_sequences
-    type: string
-    label: Stop sequences
-    description: Up to 4 custom strings that, when produced, cause the model to stop generating.
-    group: sampling
-  - path: stream
-    type: boolean
-    label: Stream
-    description: Stream the response back incrementally as Server-Sent Events.
-    default: false
-    group: output_format
-  - path: system
-    type: string
-    label: System prompt
-    description: System prompt providing context and instructions to the model.
-    group: provider_metadata
+        thinking.type:
+          - adaptive
+          - enabled
   - path: thinking.type
     type: enum
     label: Thinking mode
-    description: Controls whether extended or adaptive thinking is enabled for this model.
+    description: Controls the Anthropic thinking mode values supported by this model.
     default: disabled
-    values: [disabled, adaptive, enabled]
-    group: reasoning
-  - path: thinking.budget_tokens
-    type: integer
-    label: Thinking budget tokens
-    description: Maximum token budget Anthropic may use for extended thinking before producing the final answer.
-    default: 4096
-    range:
-      min: 1024
+    values:
+      - disabled
+      - adaptive
     group: reasoning
-    applicability:
-      only:
-        thinking.type: enabled
-  - path: service_tier
-    type: enum
-    label: Service tier
-    description: Priority tier for the request. `standard_only` avoids priority-tier billing.
-    default: auto
-    values: [auto, standard_only]
-    group: provider_metadata
diff --git a/models/anthropic/claude-opus-4-subscription.yaml b/models/anthropic/claude-opus-4-subscription.yaml
new file mode 100644
index 0000000..387dfb7
--- /dev/null
+++ b/models/anthropic/claude-opus-4-subscription.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: subscription
+model: claude-opus-4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-opus-4.yaml b/models/anthropic/claude-opus-4.yaml
new file mode 100644
index 0000000..7b784ca
--- /dev/null
+++ b/models/anthropic/claude-opus-4.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-opus-4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-sonnet-4-5-20250929.yaml b/models/anthropic/claude-sonnet-4-5-20250929.yaml
new file mode 100644
index 0000000..3b39817
--- /dev/null
+++ b/models/anthropic/claude-sonnet-4-5-20250929.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-sonnet-4-5-20250929
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-sonnet-4-5.yaml b/models/anthropic/claude-sonnet-4-5.yaml
new file mode 100644
index 0000000..d68d610
--- /dev/null
+++ b/models/anthropic/claude-sonnet-4-5.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-sonnet-4-5
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-sonnet-4-6-subscription.yaml b/models/anthropic/claude-sonnet-4-6-subscription.yaml
deleted file mode 100644
index eb551a2..0000000
--- a/models/anthropic/claude-sonnet-4-6-subscription.yaml
+++ /dev/null
@@ -1,30 +0,0 @@
-# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
-provider: anthropic
-authType: subscription
-model: claude-sonnet-4-6
-params:
-  - path: response_style
-    type: enum
-    label: Response style
-    description: Conversation tone preset.
-    default: normal
-    values: [normal, concise, explanatory, formal]
-    group: output_format
-  - path: extended_thinking
-    type: boolean
-    label: Extended thinking
-    description: Show extended thinking in the response panel.
-    default: false
-    group: reasoning
-  - path: artifacts
-    type: boolean
-    label: Artifacts
-    description: Open long outputs in the side panel.
-    default: true
-    group: tooling
-  - path: web_search
-    type: boolean
-    label: Web search
-    description: Allow live web search during the conversation.
-    default: false
-    group: tooling
diff --git a/models/anthropic/claude-sonnet-4-6.yaml b/models/anthropic/claude-sonnet-4-6.yaml
index 00be88e..1e35b85 100644
--- a/models/anthropic/claude-sonnet-4-6.yaml
+++ b/models/anthropic/claude-sonnet-4-6.yaml
@@ -10,12 +10,13 @@ params:
     default: 4096
     range:
       min: 1
-      max: 64000
     group: generation_length
   - path: temperature
     type: number
     label: Temperature
-    description: Controls randomness. Lower values make outputs more focused and deterministic; higher values make outputs more varied.
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
     default: 1
     range:
       min: 0
@@ -24,12 +25,16 @@ params:
     group: sampling
     applicability:
       except:
-        thinking.type: [adaptive, enabled]
+        thinking.type:
+          - adaptive
+          - enabled
   - path: top_p
     type: number
     label: Top P
-    description: Nucleus sampling. Consider tokens whose cumulative probability reaches this value.
-    default: 0.999
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
     range:
       min: 0
       max: 1
@@ -37,7 +42,9 @@ params:
     group: sampling
     applicability:
       except:
-        - thinking.type: [adaptive, enabled]
+        - thinking.type:
+            - adaptive
+            - enabled
         - temperature:
             not: 1
   - path: top_k
@@ -50,34 +57,25 @@ params:
     group: sampling
     applicability:
       except:
-        thinking.type: [adaptive, enabled]
-  - path: stop_sequences
-    type: string
-    label: Stop sequences
-    description: Up to 4 custom strings that, when produced, cause the model to stop generating.
-    group: sampling
-  - path: stream
-    type: boolean
-    label: Stream
-    description: Stream tokens as Server-Sent Events.
-    default: false
-    group: output_format
-  - path: system
-    type: string
-    label: System prompt
-    description: System prompt providing context and instructions to the model.
-    group: provider_metadata
+        thinking.type:
+          - adaptive
+          - enabled
   - path: thinking.type
     type: enum
     label: Thinking mode
-    description: Controls whether extended or adaptive thinking is enabled for this model.
+    description: Controls the Anthropic thinking mode values supported by this model.
     default: disabled
-    values: [disabled, adaptive, enabled]
+    values:
+      - disabled
+      - adaptive
+      - enabled
     group: reasoning
   - path: thinking.budget_tokens
     type: integer
-    label: Thinking budget tokens
-    description: Maximum token budget for extended thinking before producing the final answer.
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
     default: 4096
     range:
       min: 1024
diff --git a/models/anthropic/claude-sonnet-4-subscription.yaml b/models/anthropic/claude-sonnet-4-subscription.yaml
new file mode 100644
index 0000000..cfff3cd
--- /dev/null
+++ b/models/anthropic/claude-sonnet-4-subscription.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: subscription
+model: claude-sonnet-4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/anthropic/claude-sonnet-4.yaml b/models/anthropic/claude-sonnet-4.yaml
new file mode 100644
index 0000000..cc35e74
--- /dev/null
+++ b/models/anthropic/claude-sonnet-4.yaml
@@ -0,0 +1,85 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: anthropic
+authType: api_key
+model: claude-sonnet-4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.1
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+    applicability:
+      except:
+        - thinking.type:
+            - adaptive
+            - enabled
+        - temperature:
+            not: 1
+  - path: top_k
+    type: integer
+    label: Top K
+    description: Limits token sampling to the top K most likely next tokens.
+    default: 0
+    range:
+      min: 0
+    group: sampling
+    applicability:
+      except:
+        thinking.type:
+          - adaptive
+          - enabled
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls the Anthropic thinking mode values supported by this model.
+    default: disabled
+    values:
+      - disabled
+      - adaptive
+      - enabled
+    group: reasoning
+  - path: thinking.budget_tokens
+    type: integer
+    label: Budget tokens
+    description: >-
+      Maximum token budget Anthropic may use for extended thinking before producing the final
+      answer.
+    default: 4096
+    range:
+      min: 1024
+    group: reasoning
+    applicability:
+      only:
+        thinking.type: enabled
diff --git a/models/deepseek/deepseek-chat.yaml b/models/deepseek/deepseek-chat.yaml
new file mode 100644
index 0000000..3edd920
--- /dev/null
+++ b/models/deepseek/deepseek-chat.yaml
@@ -0,0 +1,14 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: deepseek
+authType: api_key
+model: deepseek-chat
+params:
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls whether DeepSeek thinking mode is enabled for this model.
+    default: enabled
+    values:
+      - enabled
+      - disabled
+    group: reasoning
diff --git a/models/deepseek/deepseek-v3.1.yaml b/models/deepseek/deepseek-v3.1.yaml
new file mode 100644
index 0000000..ccd6293
--- /dev/null
+++ b/models/deepseek/deepseek-v3.1.yaml
@@ -0,0 +1,14 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: deepseek
+authType: api_key
+model: deepseek-v3.1
+params:
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls whether DeepSeek thinking mode is enabled for this model.
+    default: enabled
+    values:
+      - enabled
+      - disabled
+    group: reasoning
diff --git a/models/deepseek/deepseek-v3.2.yaml b/models/deepseek/deepseek-v3.2.yaml
new file mode 100644
index 0000000..d5bde22
--- /dev/null
+++ b/models/deepseek/deepseek-v3.2.yaml
@@ -0,0 +1,14 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: deepseek
+authType: api_key
+model: deepseek-v3.2
+params:
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls whether DeepSeek thinking mode is enabled for this model.
+    default: enabled
+    values:
+      - enabled
+      - disabled
+    group: reasoning
diff --git a/models/deepseek/deepseek-v4.yaml b/models/deepseek/deepseek-v4.yaml
new file mode 100644
index 0000000..1ca1560
--- /dev/null
+++ b/models/deepseek/deepseek-v4.yaml
@@ -0,0 +1,14 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: deepseek
+authType: api_key
+model: deepseek-v4
+params:
+  - path: thinking.type
+    type: enum
+    label: Thinking mode
+    description: Controls whether DeepSeek thinking mode is enabled for this model.
+    default: enabled
+    values:
+      - enabled
+      - disabled
+    group: reasoning
diff --git a/models/openai/chatgpt-4o-latest.yaml b/models/openai/chatgpt-4o-latest.yaml
new file mode 100644
index 0000000..9022b5f
--- /dev/null
+++ b/models/openai/chatgpt-4o-latest.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: chatgpt-4o-latest
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-3.5-turbo.yaml b/models/openai/gpt-3.5-turbo.yaml
new file mode 100644
index 0000000..7955b8d
--- /dev/null
+++ b/models/openai/gpt-3.5-turbo.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-3.5-turbo
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4-turbo-2024-04-09.yaml b/models/openai/gpt-4-turbo-2024-04-09.yaml
new file mode 100644
index 0000000..2d7ab24
--- /dev/null
+++ b/models/openai/gpt-4-turbo-2024-04-09.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-4-turbo-2024-04-09
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4-turbo.yaml b/models/openai/gpt-4-turbo.yaml
new file mode 100644
index 0000000..e077e12
--- /dev/null
+++ b/models/openai/gpt-4-turbo.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-4-turbo
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4.1-mini.yaml b/models/openai/gpt-4.1-mini.yaml
new file mode 100644
index 0000000..b38c1f5
--- /dev/null
+++ b/models/openai/gpt-4.1-mini.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-4.1-mini
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4.1-nano.yaml b/models/openai/gpt-4.1-nano.yaml
new file mode 100644
index 0000000..7ba401b
--- /dev/null
+++ b/models/openai/gpt-4.1-nano.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-4.1-nano
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4.1.yaml b/models/openai/gpt-4.1.yaml
new file mode 100644
index 0000000..b3d1099
--- /dev/null
+++ b/models/openai/gpt-4.1.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-4.1
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4o-2024-11-20.yaml b/models/openai/gpt-4o-2024-11-20.yaml
new file mode 100644
index 0000000..aa7574b
--- /dev/null
+++ b/models/openai/gpt-4o-2024-11-20.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-4o-2024-11-20
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
diff --git a/models/openai/gpt-4o-mini.yaml b/models/openai/gpt-4o-mini.yaml
index 210834b..5d9b6a2 100644
--- a/models/openai/gpt-4o-mini.yaml
+++ b/models/openai/gpt-4o-mini.yaml
@@ -3,17 +3,20 @@ provider: openai
 authType: api_key
 model: gpt-4o-mini
 params:
-  - path: max_completion_tokens
+  - path: max_tokens
     type: integer
-    label: Max completion tokens
-    description: Upper bound on generated tokens.
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
     range:
       min: 1
     group: generation_length
   - path: temperature
     type: number
     label: Temperature
-    description: Sampling temperature.
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
     default: 1
     range:
       min: 0
@@ -23,57 +26,12 @@ params:
   - path: top_p
     type: number
     label: Top P
-    description: Nucleus sampling cutoff.
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
     default: 1
     range:
       min: 0
       max: 1
       step: 0.01
     group: sampling
-    applicability:
-      except:
-        temperature:
-          not: 1
-  - path: presence_penalty
-    type: number
-    label: Presence penalty
-    description: Penalize tokens based on whether they have appeared in the text so far.
-    default: 0
-    range:
-      min: -2
-      max: 2
-      step: 0.1
-    group: sampling
-  - path: frequency_penalty
-    type: number
-    label: Frequency penalty
-    description: Penalize tokens based on their existing frequency.
-    default: 0
-    range:
-      min: -2
-      max: 2
-      step: 0.1
-    group: sampling
-  - path: stop
-    type: string
-    label: Stop sequences
-    description: Up to 4 stop sequences.
-    group: sampling
-  - path: stream
-    type: boolean
-    label: Stream
-    description: Stream tokens as they are produced.
-    default: false
-    group: output_format
-  - path: seed
-    type: integer
-    label: Seed
-    description: Attempt deterministic sampling.
-    group: sampling
-  - path: response_format
-    type: enum
-    label: Response format
-    description: Constrain output format.
-    default: text
-    values: [text, json_object, json_schema]
-    group: output_format
diff --git a/models/openai/gpt-4o-subscription.yaml b/models/openai/gpt-4o-subscription.yaml
deleted file mode 100644
index edb2902..0000000
--- a/models/openai/gpt-4o-subscription.yaml
+++ /dev/null
@@ -1,46 +0,0 @@
-# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
-provider: openai
-authType: subscription
-model: gpt-4o
-params:
-  - path: custom_instructions
-    type: string
-    label: Custom instructions
-    description: Free-form context applied to every conversation (set in profile).
-    group: provider_metadata
-  - path: memory
-    type: boolean
-    label: Memory
-    description: Whether ChatGPT can remember details across conversations.
-    default: true
-    group: tooling
-  - path: web_browsing
-    type: boolean
-    label: Web browsing
-    description: Allow ChatGPT to browse the live web.
-    default: true
-    group: tooling
-  - path: canvas
-    type: boolean
-    label: Canvas
-    description: Open long-form writing or code in the Canvas side panel.
-    default: false
-    group: tooling
-  - path: image_generation
-    type: boolean
-    label: Image generation
-    description: Generate images inline (subject to plan rate limits).
-    default: true
-    group: tooling
-  - path: voice_mode
-    type: boolean
-    label: Voice mode
-    description: Speak to and listen to ChatGPT via voice mode.
-    default: true
-    group: tooling
-  - path: custom_gpts
-    type: boolean
-    label: Custom GPTs
-    description: Use Custom GPTs in addition to the default assistant.
-    default: true
-    group: tooling
diff --git a/models/openai/gpt-4o.yaml b/models/openai/gpt-4o.yaml
index 091c2ae..d57ca81 100644
--- a/models/openai/gpt-4o.yaml
+++ b/models/openai/gpt-4o.yaml
@@ -3,17 +3,20 @@ provider: openai
 authType: api_key
 model: gpt-4o
 params:
-  - path: max_completion_tokens
+  - path: max_tokens
     type: integer
-    label: Max completion tokens
-    description: Upper bound on the number of tokens that can be generated for the completion.
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
     range:
       min: 1
     group: generation_length
   - path: temperature
     type: number
     label: Temperature
-    description: Sampling temperature. Higher values produce more random output.
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
     default: 1
     range:
       min: 0
@@ -23,81 +26,12 @@ params:
   - path: top_p
     type: number
     label: Top P
-    description: Nucleus sampling. Consider tokens whose probability mass sums to top_p.
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
     default: 1
     range:
       min: 0
       max: 1
       step: 0.01
     group: sampling
-    applicability:
-      except:
-        temperature:
-          not: 1
-  - path: presence_penalty
-    type: number
-    label: Presence penalty
-    description: Positive values push the model to talk about new topics.
-    default: 0
-    range:
-      min: -2
-      max: 2
-      step: 0.1
-    group: sampling
-  - path: frequency_penalty
-    type: number
-    label: Frequency penalty
-    description: Positive values penalize tokens based on their existing frequency in the text.
-    default: 0
-    range:
-      min: -2
-      max: 2
-      step: 0.1
-    group: sampling
-  - path: stop
-    type: string
-    label: Stop sequences
-    description: Up to 4 sequences where the model will stop generating.
-    group: sampling
-  - path: stream
-    type: boolean
-    label: Stream
-    description: Stream partial deltas as Server-Sent Events.
-    default: false
-    group: output_format
-  - path: seed
-    type: integer
-    label: Seed
-    description: When set, the system attempts deterministic sampling. Same seed + params should give similar output.
-    group: sampling
-  - path: response_format
-    type: enum
-    label: Response format
-    description: Constrains the output format.
-    default: text
-    values: [text, json_object, json_schema]
-    group: output_format
-  - path: logprobs
-    type: boolean
-    label: Log probabilities
-    description: Return log probabilities of output tokens.
-    default: false
-    group: observability
-  - path: top_logprobs
-    type: integer
-    label: Top logprobs
-    description: Number of most likely tokens to return logprobs for at each position.
-    range:
-      min: 0
-      max: 20
-    group: observability
-    applicability:
-      only:
-        logprobs: true
-  - path: service_tier
-    type: enum
-    label: Service tier
-    description: Latency/cost tier. `flex` is cheaper with best-effort latency.
-    default: auto
-    values: [auto, default, flex]
-    group: provider_metadata
diff --git a/models/openai/gpt-5-chat-latest.yaml b/models/openai/gpt-5-chat-latest.yaml
new file mode 100644
index 0000000..f4496a5
--- /dev/null
+++ b/models/openai/gpt-5-chat-latest.yaml
@@ -0,0 +1,48 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5-chat-latest
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/gpt-5-mini.yaml b/models/openai/gpt-5-mini.yaml
new file mode 100644
index 0000000..43da32c
--- /dev/null
+++ b/models/openai/gpt-5-mini.yaml
@@ -0,0 +1,48 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5-mini
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/gpt-5-nano.yaml b/models/openai/gpt-5-nano.yaml
new file mode 100644
index 0000000..13f9f62
--- /dev/null
+++ b/models/openai/gpt-5-nano.yaml
@@ -0,0 +1,48 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5-nano
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/gpt-5.1-codex-max-subscription.yaml b/models/openai/gpt-5.1-codex-max-subscription.yaml
new file mode 100644
index 0000000..f84caed
--- /dev/null
+++ b/models/openai/gpt-5.1-codex-max-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.1-codex-max
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.1-codex-subscription.yaml b/models/openai/gpt-5.1-codex-subscription.yaml
new file mode 100644
index 0000000..aa9472b
--- /dev/null
+++ b/models/openai/gpt-5.1-codex-subscription.yaml
@@ -0,0 +1,37 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.1-codex
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.1.yaml b/models/openai/gpt-5.1.yaml
new file mode 100644
index 0000000..2609d54
--- /dev/null
+++ b/models/openai/gpt-5.1.yaml
@@ -0,0 +1,48 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5.1
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: none
+    values:
+      - none
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/gpt-5.2-codex-subscription.yaml b/models/openai/gpt-5.2-codex-subscription.yaml
new file mode 100644
index 0000000..65e2f8a
--- /dev/null
+++ b/models/openai/gpt-5.2-codex-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.2-codex
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.2-subscription.yaml b/models/openai/gpt-5.2-subscription.yaml
new file mode 100644
index 0000000..98d001e
--- /dev/null
+++ b/models/openai/gpt-5.2-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.2
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.2.yaml b/models/openai/gpt-5.2.yaml
new file mode 100644
index 0000000..b5ccd5b
--- /dev/null
+++ b/models/openai/gpt-5.2.yaml
@@ -0,0 +1,49 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5.2
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
diff --git a/models/openai/gpt-5.3-codex-spark-subscription.yaml b/models/openai/gpt-5.3-codex-spark-subscription.yaml
new file mode 100644
index 0000000..abd1b52
--- /dev/null
+++ b/models/openai/gpt-5.3-codex-spark-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.3-codex-spark
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.3-codex-subscription.yaml b/models/openai/gpt-5.3-codex-subscription.yaml
new file mode 100644
index 0000000..e6c206c
--- /dev/null
+++ b/models/openai/gpt-5.3-codex-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.3-codex
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.4-mini-subscription.yaml b/models/openai/gpt-5.4-mini-subscription.yaml
new file mode 100644
index 0000000..dccc53d
--- /dev/null
+++ b/models/openai/gpt-5.4-mini-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.4-mini
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.4-mini.yaml b/models/openai/gpt-5.4-mini.yaml
new file mode 100644
index 0000000..366a318
--- /dev/null
+++ b/models/openai/gpt-5.4-mini.yaml
@@ -0,0 +1,49 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5.4-mini
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
diff --git a/models/openai/gpt-5.4-subscription.yaml b/models/openai/gpt-5.4-subscription.yaml
new file mode 100644
index 0000000..6b59895
--- /dev/null
+++ b/models/openai/gpt-5.4-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.4
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.4.yaml b/models/openai/gpt-5.4.yaml
new file mode 100644
index 0000000..adc236c
--- /dev/null
+++ b/models/openai/gpt-5.4.yaml
@@ -0,0 +1,49 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5.4
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
diff --git a/models/openai/gpt-5.5-subscription.yaml b/models/openai/gpt-5.5-subscription.yaml
new file mode 100644
index 0000000..16869da
--- /dev/null
+++ b/models/openai/gpt-5.5-subscription.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: subscription
+model: gpt-5.5
+params:
+  - path: reasoning.effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
+  - path: reasoning.summary
+    type: enum
+    label: Reasoning summary
+    description: Controls the level of reasoning summary returned with the response.
+    default: auto
+    values:
+      - auto
+      - concise
+      - detailed
+      - none
+    group: reasoning
+  - path: text.verbosity
+    type: enum
+    label: Verbosity
+    description: Controls how concise or detailed the model's final text response should be.
+    default: medium
+    values:
+      - low
+      - medium
+      - high
+    group: output_format
diff --git a/models/openai/gpt-5.5.yaml b/models/openai/gpt-5.5.yaml
new file mode 100644
index 0000000..af1b65c
--- /dev/null
+++ b/models/openai/gpt-5.5.yaml
@@ -0,0 +1,49 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5.5
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+      - xhigh
+    group: reasoning
diff --git a/models/openai/gpt-5.yaml b/models/openai/gpt-5.yaml
new file mode 100644
index 0000000..5d62f79
--- /dev/null
+++ b/models/openai/gpt-5.yaml
@@ -0,0 +1,48 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: temperature
+    type: number
+    label: Temperature
+    description: >-
+      Controls randomness. Lower values make outputs more focused; higher values make them more
+      varied.
+    default: 1
+    range:
+      min: 0
+      max: 2
+      step: 0.1
+    group: sampling
+  - path: top_p
+    type: number
+    label: Top P
+    description: >-
+      Controls nucleus sampling by limiting generation to tokens whose cumulative probability
+      reaches this value.
+    default: 1
+    range:
+      min: 0
+      max: 1
+      step: 0.01
+    group: sampling
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/o1-mini.yaml b/models/openai/o1-mini.yaml
new file mode 100644
index 0000000..cbbd35c
--- /dev/null
+++ b/models/openai/o1-mini.yaml
@@ -0,0 +1,24 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: o1-mini
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/o1-preview.yaml b/models/openai/o1-preview.yaml
new file mode 100644
index 0000000..566f621
--- /dev/null
+++ b/models/openai/o1-preview.yaml
@@ -0,0 +1,24 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: o1-preview
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/o1-subscription.yaml b/models/openai/o1-subscription.yaml
deleted file mode 100644
index f9bef2a..0000000
--- a/models/openai/o1-subscription.yaml
+++ /dev/null
@@ -1,22 +0,0 @@
-# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
-provider: openai
-authType: subscription
-model: o1
-params:
-  - path: custom_instructions
-    type: string
-    label: Custom instructions
-    description: Free-form context applied to every conversation.
-    group: provider_metadata
-  - path: memory
-    type: boolean
-    label: Memory
-    description: ChatGPT memory across conversations. Currently limited for o-series models.
-    default: false
-    group: tooling
-  - path: canvas
-    type: boolean
-    label: Canvas
-    description: Open long-form writing or code in the Canvas side panel.
-    default: false
-    group: tooling
diff --git a/models/openai/o1.yaml b/models/openai/o1.yaml
index 0f227cd..35ec80c 100644
--- a/models/openai/o1.yaml
+++ b/models/openai/o1.yaml
@@ -3,31 +3,22 @@ provider: openai
 authType: api_key
 model: o1
 params:
-  - path: max_completion_tokens
+  - path: max_tokens
     type: integer
-    label: Max completion tokens
-    description: Upper bound on tokens for both reasoning and the visible response.
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
     range:
       min: 1
     group: generation_length
   - path: reasoning_effort
     type: enum
     label: Reasoning effort
-    description: How much internal reasoning the model should do before answering.
+    description: Controls how much reasoning the model should perform before producing an answer.
     default: medium
-    values: [low, medium, high]
+    values:
+      - minimal
+      - low
+      - medium
+      - high
     group: reasoning
-  - path: response_format
-    type: enum
-    label: Response format
-    description: Output format constraint. JSON modes use the structured outputs system.
-    default: text
-    values: [text, json_schema]
-    group: output_format
-  - path: service_tier
-    type: enum
-    label: Service tier
-    description: Latency/cost tier.
-    default: auto
-    values: [auto, default, flex]
-    group: provider_metadata
diff --git a/models/openai/o3-mini.yaml b/models/openai/o3-mini.yaml
index bdace6a..beb1f43 100644
--- a/models/openai/o3-mini.yaml
+++ b/models/openai/o3-mini.yaml
@@ -3,37 +3,22 @@ provider: openai
 authType: api_key
 model: o3-mini
 params:
-  - path: max_completion_tokens
+  - path: max_tokens
     type: integer
-    label: Max completion tokens
-    description: Upper bound on combined reasoning + response tokens.
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
     range:
       min: 1
     group: generation_length
   - path: reasoning_effort
     type: enum
     label: Reasoning effort
-    description: How much the model should think before answering.
+    description: Controls how much reasoning the model should perform before producing an answer.
     default: medium
-    values: [low, medium, high]
+    values:
+      - minimal
+      - low
+      - medium
+      - high
     group: reasoning
-  - path: response_format
-    type: enum
-    label: Response format
-    description: Output format constraint.
-    default: text
-    values: [text, json_schema]
-    group: output_format
-  - path: stream
-    type: boolean
-    label: Stream
-    description: Stream the visible response (not reasoning tokens).
-    default: false
-    group: output_format
-  - path: service_tier
-    type: enum
-    label: Service tier
-    description: Latency/cost tier.
-    default: auto
-    values: [auto, default, flex]
-    group: provider_metadata
diff --git a/models/openai/o3.yaml b/models/openai/o3.yaml
new file mode 100644
index 0000000..c2d5af6
--- /dev/null
+++ b/models/openai/o3.yaml
@@ -0,0 +1,24 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: o3
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/models/openai/o4-mini.yaml b/models/openai/o4-mini.yaml
new file mode 100644
index 0000000..e676838
--- /dev/null
+++ b/models/openai/o4-mini.yaml
@@ -0,0 +1,24 @@
+# yaml-language-server: $schema=https://modelparameters.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: o4-mini
+params:
+  - path: max_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 1
+    group: generation_length
+  - path: reasoning_effort
+    type: enum
+    label: Reasoning effort
+    description: Controls how much reasoning the model should perform before producing an answer.
+    default: medium
+    values:
+      - minimal
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/src/schema/model.ts b/src/schema/model.ts
index 4f2a1f2..1203127 100644
--- a/src/schema/model.ts
+++ b/src/schema/model.ts
@@ -17,8 +17,10 @@ export const ParameterGroup = z.enum([
 ]);
 export type ParameterGroup = z.infer<typeof ParameterGroup>;
 
-const SLUG = /^[a-z0-9][a-z0-9-]*$/;
+const PROVIDER_SLUG = /^[a-z0-9][a-z0-9-]*$/;
+const MODEL_ID = /^[a-z0-9][a-z0-9._:-]*$/;
 const PARAM_PATH = /^[a-z][a-z0-9_]*(\.[a-z][a-z0-9_]*)*$/;
+const BLOCKED_PARAM_PATHS = new Set(["stream"]);
 
 export const Range = z
   .object({
@@ -34,24 +36,40 @@ export type Range = z.infer<typeof Range>;
 export const JsonPrimitive = z.union([z.string(), z.number(), z.boolean(), z.null()]);
 export type JsonPrimitive = z.infer<typeof JsonPrimitive>;
 
-const ApplicabilityValue: z.ZodType<unknown> = z.lazy(() =>
-  z.union([JsonPrimitive, z.array(JsonPrimitive), z.record(z.string(), ApplicabilityValue)]),
-);
+const JsonPrimitiveArray = z.array(JsonPrimitive).min(1);
 
-export const ApplicabilityRule = z.record(z.string(), ApplicabilityValue);
+const ApplicabilityCondition = z
+  .object({
+    not: z.union([JsonPrimitive, JsonPrimitiveArray]),
+  })
+  .strict();
+
+const ApplicabilityValue = z.union([JsonPrimitive, JsonPrimitiveArray, ApplicabilityCondition]);
+
+export const ApplicabilityRule = z
+  .record(
+    z.string().regex(PARAM_PATH, "applicability keys must be snake_case dot paths"),
+    ApplicabilityValue,
+  )
+  .refine((rule) => Object.keys(rule).length > 0, {
+    message: "applicability rule must contain at least one condition",
+  });
 export type ApplicabilityRule = z.infer<typeof ApplicabilityRule>;
 
+const ApplicabilityRuleList = z.array(ApplicabilityRule).min(1);
+
 export const Applicability = z
   .object({
-    only: z.union([ApplicabilityRule, z.array(ApplicabilityRule)]).optional(),
-    except: z.union([ApplicabilityRule, z.array(ApplicabilityRule)]).optional(),
+    only: z.union([ApplicabilityRule, ApplicabilityRuleList]).optional(),
+    except: z.union([ApplicabilityRule, ApplicabilityRuleList]).optional(),
   })
+  .strict()
   .refine((a) => a.only !== undefined || a.except !== undefined, {
     message: "applicability must define `only`, `except`, or both",
   });
 export type Applicability = z.infer<typeof Applicability>;
 
-const baseParameter = z.object({
+const baseParameterShape = {
   path: z
     .string()
     .min(1)
@@ -60,62 +78,106 @@ const baseParameter = z.object({
   description: z.string().min(1).max(500),
   group: ParameterGroup,
   applicability: Applicability.optional(),
-});
-
-export const BooleanParameter = baseParameter.extend({
-  type: z.literal("boolean"),
-  default: z.boolean().optional(),
-});
-
-export const IntegerParameter = baseParameter.extend({
-  type: z.literal("integer"),
-  default: z.number().int().optional(),
-  range: Range.optional(),
-});
-
-export const NumberParameter = baseParameter.extend({
-  type: z.literal("number"),
-  default: z.number().optional(),
-  range: Range.optional(),
-});
-
-export const StringParameter = baseParameter.extend({
-  type: z.literal("string"),
-  default: z.string().optional(),
-});
-
-export const EnumParameter = baseParameter.extend({
-  type: z.literal("enum"),
-  default: JsonPrimitive.optional(),
-  values: z.array(JsonPrimitive).min(1),
-});
-
-export const Parameter = z.discriminatedUnion("type", [
-  BooleanParameter,
-  IntegerParameter,
-  NumberParameter,
-  StringParameter,
-  EnumParameter,
-]);
+};
+
+export const BooleanParameter = z
+  .object({
+    ...baseParameterShape,
+    type: z.literal("boolean"),
+    default: z.boolean().optional(),
+  })
+  .strict();
+
+export const IntegerParameter = z
+  .object({
+    ...baseParameterShape,
+    type: z.literal("integer"),
+    default: z.number().int().optional(),
+    range: Range.optional(),
+  })
+  .strict();
+
+export const NumberParameter = z
+  .object({
+    ...baseParameterShape,
+    type: z.literal("number"),
+    default: z.number().optional(),
+    range: Range.optional(),
+  })
+  .strict();
+
+export const StringParameter = z
+  .object({
+    ...baseParameterShape,
+    type: z.literal("string"),
+    default: z.string().optional(),
+  })
+  .strict();
+
+export const EnumParameter = z
+  .object({
+    ...baseParameterShape,
+    type: z.literal("enum"),
+    default: JsonPrimitive.optional(),
+    values: z.array(JsonPrimitive).min(1),
+  })
+  .strict();
+
+export const Parameter = z
+  .discriminatedUnion("type", [
+    BooleanParameter,
+    EnumParameter,
+    IntegerParameter,
+    NumberParameter,
+    StringParameter,
+  ])
+  .superRefine((parameter, ctx) => {
+    if (BLOCKED_PARAM_PATHS.has(parameter.path)) {
+      ctx.addIssue({
+        code: z.ZodIssueCode.custom,
+        path: ["path"],
+        message: `${parameter.path} is an API-level capability, not an MPS parameter`,
+      });
+    }
+
+    if (
+      parameter.type === "enum" &&
+      parameter.default !== undefined &&
+      !parameter.values.some((value) => value === parameter.default)
+    ) {
+      ctx.addIssue({
+        code: z.ZodIssueCode.custom,
+        path: ["default"],
+        message: "enum default must be one of values",
+      });
+    }
+  });
 export type Parameter = z.infer<typeof Parameter>;
 
-export const Model = z.object({
-  provider: z.string().min(1).regex(SLUG, "provider must be a kebab-case slug (e.g. `anthropic`)"),
-  authType: AuthType,
-  model: z
-    .string()
-    .min(1)
-    .regex(SLUG, "model must be a kebab-case slug (e.g. `claude-sonnet-4-6`)"),
-  params: z.array(Parameter),
-});
+export const Model = z
+  .object({
+    provider: z
+      .string()
+      .min(1)
+      .regex(PROVIDER_SLUG, "provider must be a kebab-case slug (e.g. `anthropic`)"),
+    authType: AuthType,
+    model: z
+      .string()
+      .min(1)
+      .regex(MODEL_ID, "model must be a provider-native model id without path separators"),
+    params: z.array(Parameter),
+  })
+  .strict();
 export type Model = z.infer<typeof Model>;
 
-export const Catalog = z.object({
-  $schema: z.string().url().optional(),
-  generatedAt: z.string(),
-  count: z.number().int().nonnegative(),
-  models: z.array(Model),
-});
+export const Catalog = z
+  .object({
+    $schema: z.string().url().optional(),
+    generatedAt: z.string(),
+    count: z.number().int().nonnegative(),
+    models: z.array(Model),
+  })
+  .strict();
 export type Catalog = z.infer<typeof Catalog>;
 
 export function authSuffix(authType: AuthType): "" | "-subscription" {
diff --git a/tests/catalog.test.ts b/tests/catalog.test.ts
index f600839..35b1675 100644
--- a/tests/catalog.test.ts
+++ b/tests/catalog.test.ts
@@ -19,12 +19,12 @@ function makeModel(overrides: Partial<Model> = {}): Model {
         group: "sampling",
       },
       {
-        path: "stream",
+        path: "logprobs",
         type: "boolean",
-        label: "Stream",
+        label: "Log probabilities",
         description: "y",
         default: false,
-        group: "output_format",
+        group: "observability",
       },
     ],
     ...overrides,
@@ -54,7 +54,7 @@ describe("buildCapabilityFacets", () => {
     });
     const facets = buildCapabilityFacets([m1, m2]);
     expect(facets[0]).toEqual({ path: "temperature", count: 2 });
-    expect(facets.map((f) => f.path)).toContain("stream");
+    expect(facets.map((f) => f.path)).toContain("logprobs");
     expect(facets.map((f) => f.path)).toContain("top_p");
   });
 });
diff --git a/tests/schema.test.ts b/tests/schema.test.ts
index 02d7d5f..f6239b6 100644
--- a/tests/schema.test.ts
+++ b/tests/schema.test.ts
@@ -17,12 +17,12 @@ const VALID_MODEL = {
       group: "sampling",
     },
     {
-      path: "stream",
+      path: "logprobs",
       type: "boolean",
-      label: "Stream",
-      description: "Stream tokens.",
+      label: "Log probabilities",
+      description: "Return log probabilities of output tokens.",
       default: false,
-      group: "output_format",
+      group: "observability",
     },
   ],
 };
@@ -38,6 +38,25 @@ describe("Model schema", () => {
     expect(result.success).toBe(false);
   });
 
+  it("accepts provider-native model ids with dots", () => {
+    const result = Model.safeParse({ ...VALID_MODEL, provider: "openai", model: "gpt-4.1" });
+    expect(result.success).toBe(true);
+  });
+
+  it("rejects path separators in model ids", () => {
+    const result = Model.safeParse({
+      ...VALID_MODEL,
+      provider: "deepseek",
+      model: "deepseek/deepseek-chat",
+    });
+    expect(result.success).toBe(false);
+  });
+
+  it("rejects unknown top-level fields", () => {
+    const result = Model.safeParse({ ...VALID_MODEL, metadata: { source: "docs" } });
+    expect(result.success).toBe(false);
+  });
+
   it("rejects parameter with unknown type", () => {
     const result = Model.safeParse({
       ...VALID_MODEL,
@@ -90,6 +109,40 @@ describe("Model schema", () => {
     expect(result.success).toBe(false);
   });
 
+  it("rejects API-level capabilities as params", () => {
+    const result = Model.safeParse({
+      ...VALID_MODEL,
+      params: [
+        {
+          path: "stream",
+          type: "boolean",
+          label: "Stream",
+          description: "Streaming is configured at request/API level.",
+          default: false,
+          group: "output_format",
+        },
+      ],
+    });
+    expect(result.success).toBe(false);
+  });
+
+  it("rejects unknown parameter fields", () => {
+    const result = Model.safeParse({
+      ...VALID_MODEL,
+      params: [
+        {
+          path: "temperature",
+          type: "number",
+          label: "Temperature",
+          description: "x",
+          group: "sampling",
+          ui: { control: "slider" },
+        },
+      ],
+    });
+    expect(result.success).toBe(false);
+  });
+
   it("accepts dot-notation param paths", () => {
     const result = Model.safeParse({
       ...VALID_MODEL,
@@ -127,6 +180,74 @@ describe("Model schema", () => {
     expect(result.success).toBe(true);
   });
 
+  it("rejects unknown applicability operators", () => {
+    const result = Model.safeParse({
+      ...VALID_MODEL,
+      params: [
+        {
+          path: "top_p",
+          type: "number",
+          label: "Top P",
+          description: "x",
+          group: "sampling",
+          applicability: { except: [{ temperature: { gte: 1 } }] },
+        },
+      ],
+    });
+    expect(result.success).toBe(false);
+  });
+
+  it("rejects empty applicability arrays and match objects", () => {
+    const emptyArray = Model.safeParse({
+      ...VALID_MODEL,
+      params: [
+        {
+          path: "top_p",
+          type: "number",
+          label: "Top P",
+          description: "x",
+          group: "sampling",
+          applicability: { except: [] },
+        },
+      ],
+    });
+    const emptyMatch = Model.safeParse({
+      ...VALID_MODEL,
+      params: [
+        {
+          path: "top_p",
+          type: "number",
+          label: "Top P",
+          description: "x",
+          group: "sampling",
+          applicability: { except: {} },
+        },
+      ],
+    });
+
+    expect(emptyArray.success).toBe(false);
+    expect(emptyMatch.success).toBe(false);
+  });
+
+  it("rejects enum defaults outside values", () => {
+    const result = Model.safeParse({
+      ...VALID_MODEL,
+      params: [
+        {
+          path: "reasoning_effort",
+          type: "enum",
+          label: "Reasoning effort",
+          description: "x",
+          default: "ultra",
+          values: ["low", "medium", "high"],
+          group: "reasoning",
+        },
+      ],
+    });
+
+    expect(result.success).toBe(false);
+  });
+
   it("rejects range where max < min", () => {
     const result = Model.safeParse({
       ...VALID_MODEL,