{
  "choices": [
    {
      "finish_reason": "stop",
      "index": 0,
      "message": {
        "content": "",
        "images": [
          {
            "b64_json": "iVBORw0KGgoAAAANSUhEUgAABAAAAAQACAIAAADwf7zUAABxYmNhQlgAAHFianVtYgAAAB5qdW1kYzJwYQARABCAAACqADibcQNj...QgWPKwAAAABJRU5ErkJggg==",
            "revised_prompt": "生成一张极简橙色圆点图，白色背景。"
          }
        ],
        "role": "assistant"
      }
    }
  ],
  "created": 1778840936,
  "id": "chatcmpl-image-studio-1778840936551344007",
  "model": "gpt-image-2",
  "object": "chat.completion"
}