Overview
What is the Pen? Pen is an AI writing tool for conversations as an editor.Take the document as the center, and speak directly to the document: click or select a paragraph, and tell Pen how to change it: "This paragraph is shorter" "This point of view gives some examples" "One word about xxx", not only the words that can be changed, but also the relevant parts of the whole text. Feature Highlights ▶ Conversation is editing: Say goodbye to the "→copy-paste → description→, etc. output → glued back" loop.Select the text to issue the instruction, and the change will take effect in place. The ▶ revision record can be checked: the revision history and conversation record of each sentence are hung next to the original text, how Pen thinks about your instructions, how the text is polished, and the whole process can be traced.Supports importing existing documents, leaving private notes. ▶ Factual Traceability: Every factual statement is accompanied by a verifiable source of information at the end of the article, and the AI cannot open its mouth. ▶ Collaborative annotation: Documents can be shared, friends or team members can comment and make suggestions, change real-time visibility, receive real-time feedback, and adopt or reject what you say. ▶ Agent direct connection: throw the Pen share link to Codex or Claude Code, the agent directly into the document editing, change the real-time synchronization - Pen is also the input method for the agent. ▶
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Pen 是什么 Pen 是一款对话即编辑器的 AI 写作工具。以文档为中心，直接对着文档说话：点击或选中一段话，告诉 Pen 怎么改："这段短一点""这个观点再给一些例子""关于 xxx 的部分一个字别动"，不是只能改选中的话，而是全文相关的部分一并改动。 功能亮点 ▶ 对话即编辑：告别"复制 → 粘贴 → 描述 → 等输出 → 粘回去"的循环。选中文字下达指令，改动原地生效。 ▶ 修改战绩可查：每一句的修改历史和对话记录挂在原文旁边，Pen是如何思考你的指令的，文字是怎么打磨出来的，全程可追溯。支持导入现有文档，可留私人笔记。 ▶ 事实可溯源：每个事实性表述都带可验证的信息源放在文章最后，AI 不能张口就来。 ▶ 协作批注：文档可分享，朋友或团队成员能批注提建议，改动实时可见、实时收到反馈，采不采纳你说了算。 ▶ Agent 直连：把 Pen 的分享链接丢给 Codex 或 Claude Code，agent 直接进文档编辑，改动实时同步——Pen 也是给 agent 的输入方式。 ▶ 个人永久免费。