ChatCompletion

{
    "id": "chatcmpl-abc123",
    "object": "chat.completion",
    "created": 1715424000,
    "model": "gpt-4o",
    "choices": [
        {
            "index": 0,
            "message": {
                "role": "system",
                "content": "Hello!"
            },
            "finish_reason": "stop"
        }
    ],
    "usage": {
        "prompt_tokens": 25,
        "completion_tokens": 150,
        "total_tokens": 175
    }
}