New Write with the coauthor on your Claude, ChatGPT or Grok plan.

Get a publish-ready book.

An editor built for serious authors. You write the pages, or the coauthor writes them with you.

Prefer the paper desk? See the editor

Built on Typewriter, where 19,000+ authors write.

Out of ideas? Try one of these.

A novel

The Quiet Harbour

Mara Quinn

Novel · Mystery

The Quiet Harbour

Mara Quinn

Rain hit the quay before the ferry cleared the headland. Mara kept the lamp low.

Fiction · 12 chaptersEPUB · PDF · KDP

Three ways to write

Coauthor, Planner or Auto. Same book.

Switch any time. Nothing moves to a second app, and every chapter stays on the one manuscript.

Coauthor

You write. It proposes.
Select a paragraph and ask for a sharper version, or let it continue from the caret. Every change arrives as a tracked suggestion. Nothing touches the chapter until you Accept.
  • Propose-only edits you Accept or Reject
  • Ask mode thinks with you and changes nothing
  • Knows the story bible, so names and facts hold

Planner

Structure first.
Planner leads with the plan: parts, chapters, beats, the order of reveals. On big multi-chapter jobs it stops for your OK before it runs the heavy work.
  • Outline, arcs and chapter beats
  • Pauses for your OK on big jobs
  • Turns a messy idea into a table of contents

Auto

Describe it. Leave with a file.
Auto takes the idea through format, title, outline, every chapter, a cover from Cover Designer, and the publish checks. You can stop it at any step. The book stays on your shelf either way.
  • Format → title → outline → write → cover → publish
  • Stop any time; the draft is kept
  • EPUB, HTML and Markdown out of the same manuscript

Editor

Write your book on one desk.

You want the book finished, not another app. Chapters, outline, story bible, map, edit passes and export live together. The editor is free; tokens only when you ask the coauthor.

See the editor
Opening the page…

Start from a book

Pick a jacket. The book starts there.

Each cover carries a brief. Tap one and Book Author opens with it, ready to plan, write with you, or run on Auto.

Opens with that book’s first sentence as your brief.

Bring your own AI

Use the ChatGPT, Claude or Grok plan you already pay for.

Sign in once and the coauthor runs on that plan. AuthorKit keeps the book tools: chapters, story bible, Accept, export. No ChatGPT plan? Hosted models run from the wallet.

  1. 01
    Sign in with your plan

    ChatGPT, Claude or Grok, from Settings → Models. No API key to paste.

  2. 02
    The coauthor stays the coauthor

    Same propose-only edits, story bible and Accept. Only the model behind it changes.

  3. 03
    Hosted models when you want them

    Prefer not to bring a plan? Our models run from the wallet, on the same desk.

Settings · ModelsBook Author
  • ChatGPTSign in with your plan
    Bring
  • ClaudeSign in with your plan
    Bring
  • GrokSign in with your plan
    Bring
  • Hosted modelsCharged to the wallet
    Default

The sale

A buy button,wherever they already are.

Export the file and upload it yourself. Sell on Gumroad or your own site and keep the checkout. Amazon and Kobo are there when you want the shelf.

  • Amazon
  • Kobo
  • Gumroad
  • Your site
  • Instagram
  • TikTok
  • Facebook

EPUB, HTML or Markdown from the desk. You upload. You keep the rights.

Community

Books our authors already published.

Novels, poetry, memoir, plays and textbooks from writers on Typewriter and AuthorKit. Browse the shelf

Pricing

Write free. Pay when the coauthor works.

The editor is free. Coauthor runs on wallet tokens from our hosted models, or on the ChatGPT, Claude or Grok plan you already pay for.

Tokens
$25/mo10M

More room for Auto runs and long revision passes.

Monthly credits

Everything in Free, plus

  • Everything in Free
  • Hosted model runs charged to one wallet
  • Long Auto runs, chapter after chapter
  • Cover handoff to Cover Designer
  • No second AI subscription needed

Hosting

  • Same shelf, same files
  • Stop or top up any time
  • You approve what changes

Also

  • One wallet across your Cloudcrew hires
Free
$0/moStarter credits

The whole editor and a starter wallet for the coauthor.

Everything in this plan

  • Manuscript, outline, story bible and map
  • Coauthor, Planner and Auto modes
  • Seven edit passes and snapshots
  • Format, publish checks and export
  • Starter tokens on hosted models

Hosting

  • Unlimited books on your shelf
  • Share to the community shelf
  • Export any time

Also

  • Or sign in with ChatGPT, Claude, or Grok

Pricing questions · Bring your own AI

FAQ

Before the first chapter.

Short answers before the first sentence.

01Will it rewrite my book behind my back?

No. In Coauthor mode every change is a tracked suggestion that waits for Accept. You choose how fixes land: Review (everything waits), Safe (line edits go in, rewrites wait) or Autorun.

02What is Auto, exactly?

A full run from idea to file: format, title, outline, chapters, cover and publish checks. You watch each step on the desk and can stop it at any point. What was written stays.

03Can I just write, with no AI?

Yes. The editor, binder, outline, bible and export all work without asking the coauthor for anything. Tokens are only spent when you ask.

04Can I bring the AI I already pay for?

Yes. Sign in with ChatGPT, Claude or Grok and the coauthor runs on that plan. Or use our hosted models from the wallet.

05I already write on Typewriter. Is this different?

AuthorKit is Typewriter's editor and CoAuthor, uplifted into Book Author on Cloudcrew. Same craft tools, one login with the rest of your crew.

06Who owns the book?

You do. Export EPUB, HTML or Markdown any time. Your pages are not used to train models.

Give the book its first sentence.

See the editor