{
  "id": "chatcmpl-example",
  "object": "chat.completion",
  "created": 1741428397,
  "model": "gpt-5.4-mini",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "…"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 18,
    "completion_tokens": 120,
    "total_tokens": 138
  }
}

{
  "error": {
    "message": "Invalid request: missing required field or invalid parameter",
    "type": "invalid_request_error",
    "code": "bad_request"
  }
}

{
  "error": {
    "message": "Invalid token or authentication failed",
    "type": "authentication_error",
    "code": "unauthorized"
  }
}

{
  "error": {
    "message": "Insufficient quota. Please top up your account.",
    "type": "insufficient_quota",
    "code": "insufficient_quota"
  }
}

{
  "error": {
    "message": "Model not allowed for this token, or access denied",
    "type": "permission_error",
    "code": "forbidden"
  }
}

{
  "error": {
    "message": "Not found",
    "type": "invalid_request_error",
    "code": "not_found"
  }
}

{
  "error": {
    "message": "Rate limit exceeded. Please retry later.",
    "type": "rate_limit_error",
    "code": "rate_limit_exceeded"
  }
}

{
  "error": {
    "message": "Internal server error",
    "type": "server_error",
    "code": "internal_error"
  }
}

{
  "error": {
    "message": "Upstream provider error or bad gateway",
    "type": "server_error",
    "code": "bad_gateway"
  }
}

{
  "error": {
    "message": "Service temporarily unavailable",
    "type": "server_error",
    "code": "service_unavailable"
  }
}