BerriAI/litellm · error · Exception

Request did not return a 200 status code: {response.status_c

Error message

Request did not return a 200 status code: {response.status_code}, {response.text}

What it means

Raised in async_audio_speech when the awaited POST to the Vertex AI speech endpoint returns non-200; status and body are embedded. Same failure class as the sync path: bad request payload, auth, or quota.

Source

Thrown at litellm/llms/vertex_ai/text_to_speech/text_to_speech_handler.py:188

    async def async_audio_speech(
        self,
        logging_obj,
        url: str,
        headers: dict,
        request: VertexTextToSpeechRequest,
    ) -> HttpxBinaryResponseContent:
        import base64

        async_handler: Final = get_async_httpx_client(llm_provider=litellm.LlmProviders.VERTEX_AI)

        response = await async_handler.post(
            url=url,
            headers=headers,
            json=request,
        )

        if response.status_code != 200:
            raise Exception(f"Request did not return a 200 status code: {response.status_code}, {response.text}")

        _json_response: Final = response.json()

        response_content: Final = _json_response["audioContent"]

        # Decode base64 to get binary content
        binary_data: Final = base64.b64decode(response_content)

        # Create an httpx.Response object
        response = httpx.Response(
            status_code=200,
            content=binary_data,
        )

        # Initialize the HttpxBinaryResponseContent instance
        http_binary_response: Final = HttpxBinaryResponseContent(response)
        return http_binary_response

View on GitHub (pinned to 77b7c6c40c)

Solutions

1. Read the status code and response text in the error to identify the upstream failure (permissions, billing, invalid input).
2. Confirm the Vertex AI Text-to-Speech API is enabled on the project and the credentials have the required IAM roles.

When it happens

Trigger: Thrown at litellm/llms/vertex_ai/text_to_speech/text_to_speech_handler.py:188 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@77b7c6c40c (2026-08-18). Data as JSON: /api/errors/84a1d98c407f3c22. Report an issue: GitHub.