{
  "system_prefix": null,
  "history_count": 1,
  "user_summary": {
    "text": "用一句话解释缓存",
    "has_image": false,
    "has_tool_result": false
  },
  "assistant_summary": {
    "text": "缓存就是通过把常用数据临时存到更快的存储位置，让下次访问更快，从而减少耗时和底层系统压力。",
    "tool_calls": [],
    "stop_reason": "stop"
  }
}

{
  "completion_tokens": 43,
  "completion_tokens_details": {
    "reasoning_tokens": 15
  },
  "prompt_tokens": 87,
  "prompt_tokens_details": {
    "cached_tokens": 0
  },
  "total_tokens": 130
}