返回结果
非流式成功响应与相关 Header。
成功响应
成功响应（非流式）示例：
json
{
"id": "chatcmpl-abc123",
"object": "chat.completion",
"model": "auto",
"choices": [{
"index": 0,
"message": { "role": "assistant", "content": "你好！" },
"finish_reason": "stop"
}],
"usage": {
"prompt_tokens": 12,
"completion_tokens": 18,
"total_tokens": 30
}
}