OpenAI 更新 ChatGPT 深度研究工具，引入 GPT-5.2 模型提升报告生成能力，并新增全屏查看器功能。用户可在独立窗口完整浏览报告，通过左侧交互式目录快速跳转至特定内容，优化了阅读与信息获取体验。
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