{
  "id": "chatcmpl-resp_ABC123",
  "object": "chat.completion",
  "created": 1734000000,
  "model": "gw-gemini-model",
  "choices": [
    {
      "index": 0,
      "message": {"role": "assistant", "content": "Hello! How can I help you today?"},
      "finish_reason": "stop"
    }
  ],
  "usage": {"prompt_tokens": 8, "completion_tokens": 9, "total_tokens": 17}
}