Error Codes

HTTP Status Codes

Status	Meaning	Action
200	Success	—
400	Bad request	Check your request parameters
401	Unauthorized	Verify your API key
403	Forbidden	Check your account permissions
404	Not found	Verify the endpoint or model ID
429	Rate limit exceeded	Slow down or upgrade tier
500	Server error	Retry after a brief wait
503	Service unavailable	Retry after a brief wait

Type	Description
`invalid_request_error`	Malformed request or invalid parameters
`authentication_error`	Invalid or missing API key
`rate_limit_error`	Exceeded your rate limit
`model_not_found_error`	Specified model doesn't exist
`context_length_exceeded`	Input exceeds model's context window
`content_filter_error`	Content blocked by safety policies
`server_error`	Internal server error

{
  "error": {
    "message": "Human-readable description",
    "type": "error_type",
    "code": "error_code",
    "param": "parameter_name"
  }
}

Status: 401
Message: "Invalid API key provided"

Contact support@linkwo.com to verify your API key.

Status: 400
Message: "This model's maximum context length is 128000 tokens"

Reduce your input length or use max_tokens to limit output.

Status: 429
Message: "Rate limit exceeded"

Implement exponential backoff. See Rate Limits.

Status: 404
Message: "Model 'gpt-5' not found"

Check available models at Model Overview.