BerriAI/litellm · error · ValueError

Azure AI API key is required for model {model}. Set AZURE_AI

Error message

Azure AI API key is required for model {model}. Set AZURE_AI_API_KEY environment variable or pass api_key parameter.

What it means

Error "Azure AI API key is required for model {model}. Set AZURE_AI_API_KEY environment variable or pass api_key parameter." thrown in BerriAI/litellm.

Source

Thrown at litellm/llms/azure_ai/image_edit/mai_transformation.py:97

            except ValueError:
                raise ValueError(f"Invalid size format: '{size}'. Expected format 'WIDTHxHEIGHT' (e.g., '1024x1024').")

        raise ValueError(
            f"Unsupported size value: '{size}'. Use a known size (e.g., '1024x1024') or a custom 'WIDTHxHEIGHT' string."
        )

    def validate_environment(
        self,
        headers: dict,
        model: str,
        api_key: str | None = None,
        litellm_params: dict | None = None,
        api_base: str | None = None,
    ) -> dict:
        api_key = AzureFoundryModelInfo.get_api_key(api_key)

        if not api_key:
            raise ValueError(
                f"Azure AI API key is required for model {model}. "
                "Set AZURE_AI_API_KEY environment variable or pass api_key parameter."
            )

        headers.update({"api-key": api_key})
        return headers

    def get_complete_url(
        self,
        model: str,
        api_base: str | None,
        litellm_params: dict,
    ) -> str:
        api_base = AzureFoundryModelInfo.get_api_base(api_base)

        if api_base is None:
            raise ValueError(
                "Azure AI API base is required. Set AZURE_AI_API_BASE environment variable or pass api_base parameter."

View on GitHub (pinned to 6c2dcb801b)

Solutions

1. Set AZURE_AI_API_KEY or pass api_key.

When it happens

Trigger: Thrown at litellm/llms/azure_ai/image_edit/mai_transformation.py:97 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/7c469a0cdc60a014. Report an issue: GitHub.