diff --git a/pyproject.toml b/pyproject.toml
index 1925fc46..080a4a4f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "celeste-ai"
-version = "0.2.4"
+version = "0.2.5"
 description = "Open source, type-safe primitives for multi-modal AI. All capabilities, all providers, one interface"
 authors = [{name = "Kamilbenkirane", email = "kamil@withceleste.ai"}]
 readme = "README.md"
diff --git a/src/celeste/__init__.py b/src/celeste/__init__.py
index e80e8e31..281c4a1b 100644
--- a/src/celeste/__init__.py
+++ b/src/celeste/__init__.py
@@ -16,6 +16,7 @@
     StreamNotExhaustedError,
     UnsupportedCapabilityError,
     UnsupportedParameterError,
+    UnsupportedProviderError,
     ValidationError,
 )
 from celeste.http import HTTPClient, close_all_http_clients
@@ -120,6 +121,7 @@ def create_client(
     "StreamingNotSupportedError",
     "UnsupportedCapabilityError",
     "UnsupportedParameterError",
+    "UnsupportedProviderError",
     "Usage",
     "ValidationError",
     "close_all_http_clients",
diff --git a/src/celeste/core.py b/src/celeste/core.py
index 91e155cc..11194ce7 100644
--- a/src/celeste/core.py
+++ b/src/celeste/core.py
@@ -19,6 +19,7 @@ class Provider(StrEnum):
     TOPAZLABS = "topazlabs"
     PERPLEXITY = "perplexity"
     BYTEDANCE = "bytedance"
+    ELEVENLABS = "elevenlabs"
 
 
 class Capability(StrEnum):
@@ -39,6 +40,9 @@ class Capability(StrEnum):
     # Audio
     AUDIO_INTELLIGENCE = "audio-intelligence"
 
+    # Speech
+    SPEECH_GENERATION = "speech-generation"
+
     # Search
     SEARCH = "search"
 
diff --git a/src/celeste/credentials.py b/src/celeste/credentials.py
index 124a0011..f61ede4d 100644
--- a/src/celeste/credentials.py
+++ b/src/celeste/credentials.py
@@ -5,7 +5,7 @@
 from pydantic_settings import BaseSettings
 
 from celeste.core import Provider
-from celeste.exceptions import MissingCredentialsError
+from celeste.exceptions import MissingCredentialsError, UnsupportedProviderError
 
 # Provider to credential field mapping
 PROVIDER_CREDENTIAL_MAP = {
@@ -22,6 +22,7 @@
     Provider.TOPAZLABS: "topazlabs_api_key",
     Provider.PERPLEXITY: "perplexity_api_key",
     Provider.BYTEDANCE: "bytedance_api_key",
+    Provider.ELEVENLABS: "elevenlabs_api_key",
 }
 
 
@@ -41,6 +42,7 @@ class Credentials(BaseSettings):
     topazlabs_api_key: SecretStr | None = Field(None, alias="TOPAZLABS_API_KEY")
     perplexity_api_key: SecretStr | None = Field(None, alias="PERPLEXITY_API_KEY")
     bytedance_api_key: SecretStr | None = Field(None, alias="BYTEDANCE_API_KEY")
+    elevenlabs_api_key: SecretStr | None = Field(None, alias="ELEVENLABS_API_KEY")
 
     model_config = {
         "env_file": find_dotenv(),
@@ -95,12 +97,11 @@ def has_credential(self, provider: Provider) -> bool:
             True if provider has credentials configured, False if credentials not set.
 
         Raises:
-            ValueError: If provider has no credential mapping.
+            UnsupportedProviderError: If provider has no credential mapping.
         """
         credential_field = PROVIDER_CREDENTIAL_MAP.get(provider)
         if not credential_field:
-            msg = f"Provider {provider} has no credential mapping"
-            raise ValueError(msg)
+            raise UnsupportedProviderError(provider=provider)
         return getattr(self, credential_field, None) is not None
 
 
diff --git a/src/celeste/exceptions.py b/src/celeste/exceptions.py
index cff116e6..c4768dae 100644
--- a/src/celeste/exceptions.py
+++ b/src/celeste/exceptions.py
@@ -147,6 +147,18 @@ def __init__(self, provider: str) -> None:
         )
 
 
+class UnsupportedProviderError(CredentialsError):
+    """Raised when a provider is not configured in the credential system."""
+
+    def __init__(self, provider: str) -> None:
+        """Initialize with provider details."""
+        self.provider = provider
+        super().__init__(
+            f"Provider {provider} has no credential mapping. "
+            f"This provider is not configured in the credential system."
+        )
+
+
 class UnsupportedParameterError(ValidationError):
     """Raised when a parameter is not supported by a model."""
 
@@ -170,4 +182,5 @@ def __init__(self, parameter: str, model_id: str) -> None:
     "StreamingNotSupportedError",
     "UnsupportedCapabilityError",
     "UnsupportedParameterError",
+    "UnsupportedProviderError",
 ]