Write your book by chatting with ChatGPT.
Built&Written for OpenAI Apps gives ChatGPT a persistent book project with chapters, voice and KDP-ready export — so the book grows beyond a single chat window.
Already on Claude? Use it today →
Can you write a 200-page book on customer success with me?
Yes — I’ll create the book in your Built&Written project and draft 12 chapters. Generation runs in the background.
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- Claude Desktop
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- ChatGPT (OpenAI Apps)soon
Standard MCP server — connect Built&Written to any MCP-compatible AI client.
Can ChatGPT write a whole book? Not alone — but with a persistent project, yes.
ChatGPT's chat window forgets. Built&Written gives ChatGPT a real book project with chapters, voice and export — so writing a 200-page non-fiction book stops being a chat-window problem.
Persistent project
Your book lives outside the ChatGPT chat. Chapters, outline and edits survive sessions.
Structure-aware generation
ChatGPT reads your outline and surrounding chapters before writing — so chapter 7 stays consistent with chapter 1.
Voice consistency
Train Built&Written on your writing samples once. Every generated chapter stays on your voice.
You can write your book in Built&Written today.
The ChatGPT app is on the way. You don’t have to wait — Built&Written’s editor, voice profile and KDP export work right now, and the same book project will be ready the day ChatGPT integration lands.
- Outline a book from notes
- Generate chapters in the background
- Train Built&Written on your voice
- Export print-ready KDP PDF
- Cover designer included
- EPUB and DOCX export
Writing a book with ChatGPT — answered.
Yes — ChatGPT can write a book when it has a persistent project to write into. Built&Written for OpenAI Apps gives ChatGPT a real book structure with chapters, voice profile and KDP export, so the book grows beyond a single chat window.
Create a Built&Written account, install the ChatGPT app, then ask ChatGPT to outline your book. ChatGPT calls Built&Written's tools to save the outline and generate chapters into a persistent project.
Yes — Built&Written ships as a ChatGPT app via the OpenAI Apps SDK. Install once and ask ChatGPT to outline, draft or revise your book.
ChatGPT's chat window is bounded. Built&Written gives ChatGPT a persistent project, so chapter-to-chapter continuity, voice and structure survive across sessions.
Both work with Built&Written. Claude tends to produce more on-voice long-form drafts; ChatGPT is faster for short revisions. Either way, your book lives in your Built&Written project.
Yes — when paired with Built&Written, the book lives outside the chat window. ChatGPT writes chapter by chapter into your persistent project, so length is bounded by your plan, not by the chat.
Yes — via Built&Written. Print-ready PDF, EPUB and DOCX, KDP-compliant trim sizes.
Yes — OpenAI Apps require a ChatGPT Plus, Team or Enterprise plan.
Yes. Your book is stored in your Built&Written account. ChatGPT reads only the chapters or content you ask it to.
Be first when ChatGPT can write your book.
We’ll email you the moment the OpenAI Apps integration is live.