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Cohere API error

Cohere API 400 Bad Request: what it means and how to fix it

Error message
400 Bad Request

Retry? Not statedLast verified 1 documented fix1 source

What it means

400 responses are sent when the body of the request is not valid. This can happen when required fields are missing, or when the values provided are not valid.

Causes

  • Required fields are missing (for example "a model parameter is required for this endpoint.")
  • Values provided are not valid (for example "invalid request: temperature must be between 0 and 1.0 inclusive.")
  • Unsupported parameter combinations (for example "invalid request: response_format is not supported with RAG.")
  • Invalid JSON syntax

How to fix it

  1. Fix 1.

    Consult the API spec to ensure that you are providing the correct fields and values.

More Cohere API errors

HTTP 400 at other providers

Compare 400 across providers

FAQ

What does the Cohere API error "400 Bad Request" mean?

400 responses are sent when the body of the request is not valid. This can happen when required fields are missing, or when the values provided are not valid.

How do I fix Cohere API "400 Bad Request"?

Consult the API spec to ensure that you are providing the correct fields and values.

Should I retry Cohere API "400 Bad Request"?

Not stated. The official docs do not say whether this error is retryable.

Which other AI APIs return HTTP 400?

Per their official error docs: Amazon Bedrock (400 ValidationException; 400 ServiceQuotaExceededException; 400 IncompleteSignature; 400 InvalidAction; 400 NotAuthorized; 400 RequestExpired), Anthropic API (400 invalid_request_error; 400 invalid_request_error (spend limit reached)), Azure OpenAI (400 Bad Request; 400 content_filter), DeepSeek API (400 - Invalid Format), Gemini API (400 invalid_request; 400 failed_precondition; 400 parameter_unknown; 400 INVALID_ARGUMENT; 400 FAILED_PRECONDITION), Groq API (400 Bad Request), Mistral API (400 Bad request), OpenAI API (400 invalid_request_error (Invalid service_tier argument); 400 BadRequestError), OpenRouter (400 invalid_request; 400 invalid_prompt; 400 context_length_exceeded; 400 max_tokens_exceeded; 400 token_limit_exceeded; 400 string_too_long; 400 invalid_image; 400 image_too_large; 400 image_too_small; 400 unsupported_image_format; 400 image_download_failed), Vertex AI (400 INVALID_ARGUMENT / FAILED_PRECONDITION), xAI API (400 Bad Request).

Sources

Last verified against 1 source: Cohere API's official docs and official SDK repositories.

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