ChatResponse

{
    "id": "chatcmpl-1234567890",
    "object": "chat.completion",
    "created": 0,
    "model": "claude-sonnet-4-6",
    "provider": "claude",
    "choices": [
        {
            "index": 0,
            "message": {
                "role": "system",
                "content": "string",
                "name": "string",
                "tool_calls": [
                    {
                        "id": "call_abc123",
                        "type": "function",
                        "function": {
                            "name": "get_weather",
                            "arguments": "{\"location\":\"Paris, FR\"}"
                        },
                        "index": 0
                    }
                ],
                "tool_call_id": "call_abc123"
            },
            "finish_reason": "stop",
            "logprobs": null
        }
    ],
    "usage": {
        "prompt_tokens": 12,
        "completion_tokens": 48,
        "total_tokens": 60
    }
}