BerriAI/litellm · error · ValueError

Provider config not found for model: {model} and provider: {

Error message

Provider config not found for model: {model} and provider: {custom_llm_provider}

What it means

Error "Provider config not found for model: {model} and provider: {custom_llm_provider}" thrown in BerriAI/litellm.

Source

Thrown at litellm/llms/custom_httpx/aiohttp_handler.py:315

        custom_llm_provider: str,
        model_response: ModelResponse,
        encoding,
        logging_obj: LiteLLMLoggingObj,
        optional_params: dict,
        timeout: float | httpx.Timeout,
        litellm_params: dict,
        acompletion: bool,
        stream: bool | None = False,
        fake_stream: bool = False,
        api_key: str | None = None,
        headers: dict | None = {},
        client: HTTPHandler | AsyncHTTPHandler | ClientSession | None = None,
    ):
        provider_config: Final = ProviderConfigManager.get_provider_chat_config(
            model=model, provider=litellm.LlmProviders(custom_llm_provider)
        )
        if provider_config is None:
            raise ValueError(f"Provider config not found for model: {model} and provider: {custom_llm_provider}")
        # get config from model, custom llm provider
        headers = provider_config.validate_environment(
            api_key=api_key,
            headers=headers or {},
            model=model,
            messages=messages,
            optional_params=optional_params,
            litellm_params=litellm_params,
            api_base=api_base,
        )

        api_base = provider_config.get_complete_url(
            api_base=api_base,
            api_key=api_key,
            model=model,
            optional_params=optional_params,
            litellm_params=litellm_params,
            stream=stream,

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Use a supported model/provider combination or register a provider config.

When it happens

Trigger: Thrown at litellm/llms/custom_httpx/aiohttp_handler.py:315 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@6c2dcb801b (2026-08-15). Data as JSON: /api/errors/208649f88af16cbb. Report an issue: GitHub.