diff --git a/models/openai/gpt-5.6-terra.yaml b/models/openai/gpt-5.6-terra.yaml
new file mode 100644
index 0000000..59c1df4
--- /dev/null
+++ b/models/openai/gpt-5.6-terra.yaml
@@ -0,0 +1,24 @@
+# yaml-language-server: $schema=https://modelparams.dev/api/v1/schema.json
+provider: openai
+authType: api_key
+model: gpt-5.6-terra
+params:
+  - path: max_completion_tokens
+    type: integer
+    label: Max tokens
+    description: Maximum number of output tokens the model may generate.
+    default: 4096
+    range:
+      min: 16
+    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: none
+    values:
+      - none
+      - low
+      - medium
+      - high
+    group: reasoning
diff --git a/packages/modelparams/src/generated/data.ts b/packages/modelparams/src/generated/data.ts
index 9a7628e..d07ee92 100644
--- a/packages/modelparams/src/generated/data.ts
+++ b/packages/modelparams/src/generated/data.ts
@@ -12643,6 +12643,38 @@ export const CATALOG = [
       }
     ]
   },
+  {
+    "provider": "openai",
+    "authType": "api_key",
+    "model": "gpt-5.6-terra",
+    "params": [
+      {
+        "path": "max_completion_tokens",
+        "label": "Max tokens",
+        "description": "Maximum number of output tokens the model may generate.",
+        "group": "generation_length",
+        "type": "integer",
+        "default": 4096,
+        "range": {
+          "min": 16
+        }
+      },
+      {
+        "path": "reasoning_effort",
+        "label": "Reasoning effort",
+        "description": "Controls how much reasoning the model should perform before producing an answer.",
+        "group": "reasoning",
+        "type": "enum",
+        "default": "none",
+        "values": [
+          "none",
+          "low",
+          "medium",
+          "high"
+        ]
+      }
+    ]
+  },
   {
     "provider": "openai",
     "authType": "api_key",
diff --git a/packages/modelparams/src/generated/defaults.ts b/packages/modelparams/src/generated/defaults.ts
index c88e0ea..b763a36 100644
--- a/packages/modelparams/src/generated/defaults.ts
+++ b/packages/modelparams/src/generated/defaults.ts
@@ -1013,6 +1013,10 @@ export const DEFAULTS = {
     max_completion_tokens: 4096,
     reasoning_effort: "none",
   },
+  "openai/gpt-5.6-terra": {
+    max_completion_tokens: 4096,
+    reasoning_effort: "none",
+  },
   "openai/o1": {
     max_completion_tokens: 4096,
     reasoning_effort: "medium",
diff --git a/packages/modelparams/src/generated/model-ids.ts b/packages/modelparams/src/generated/model-ids.ts
index 2816a28..f4c910d 100644
--- a/packages/modelparams/src/generated/model-ids.ts
+++ b/packages/modelparams/src/generated/model-ids.ts
@@ -165,6 +165,7 @@ export const MODEL_IDS = [
   "openai/gpt-5.5-subscription",
   "openai/gpt-5.6-luna",
   "openai/gpt-5.6-sol",
+  "openai/gpt-5.6-terra",
   "openai/o1",
   "openai/o1-mini",
   "openai/o1-preview",
diff --git a/packages/modelparams/src/generated/params-by-id.ts b/packages/modelparams/src/generated/params-by-id.ts
index 7b4df80..a2d5436 100644
--- a/packages/modelparams/src/generated/params-by-id.ts
+++ b/packages/modelparams/src/generated/params-by-id.ts
@@ -1215,6 +1215,10 @@ export type ParamsById = {
     max_completion_tokens: number;
     reasoning_effort: "none" | "low" | "medium" | "high";
   };
+  "openai/gpt-5.6-terra": {
+    max_completion_tokens: number;
+    reasoning_effort: "none" | "low" | "medium" | "high";
+  };
   "openai/o1": {
     max_completion_tokens: number;
     reasoning_effort: "low" | "medium" | "high" | "xhigh";