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Leanpub's AI ghostwriter
GhostAI: Your Wingman Through the Danger Zone
Most books die somewhere between the blank page and a published first version. That stretch is the danger zone, and GhostAI flies it with you. It interviews you about what you know, turns your answers into a book outline, helps outline chapters as well, and can even help draft chapters in your voice, and push back on the weak ones. On the days you want to quit, it coaches you back into the chair. It stays on your wing until the book is published.The best way to buy GhostAI is to buy the GhostAI Accelerator.
Where you write
Three Ways to Use GhostAI
There are three ways to use GhostAI: (1) GhostAI Studio in Leanpub, (2) the GhostAI Drawer in the Visual or Source editor, and (3) the GhostAI Plugin, for Claude Code or Codex. GhostAI Studio and the GhostAI Drawer come with a Max or Ultra Author Membership. The GhostAI Plugin is a one-time purchase, with free lifetime updates.
However, the best way to use GhostAI is to get the GhostAI Accelerator bundle, which also includes Publish on Amazon when your book is done. This is the single best deal on all of Leanpub. Learn more below.
(1) In Leanpub, as a conversation
GhostAI Studio
With a Max or Ultra Author Membership
GhostAI Studio is GhostAI as a conversation. Choose it when you start a new book, or open it from your book's menu in the Leanpub author app. GhostAI interviews you about what you know, drafts the chapters straight into your manuscript, and nothing lands until you approve it. You can talk instead of type. The files stay exactly where they are, so you can open them in the Leanpub editor whenever you like.
GhostAI Studio is for authors who have the book in their head and would rather answer good questions than face a blank page. It runs on the AI usage included with a Max or Ultra Author Membership, the same membership that includes the GhostAI Drawer, and works with a book in the Visual or Source writing mode.
(2) In the Visual or Source editor
GhostAI Drawer
With a Max or Ultra Author Membership
The GhostAI Drawer is built directly into the Visual and Source editors on Leanpub. Open the GhostAI Drawer while editing any chapter, pick a skill, and start writing — no setup, no API key, no installation. The same skills, the same voice profiling, the same manuscript-aware intelligence, running right alongside your text.
The on-platform experience is designed for authors who want the power of GhostAI without leaving their writing environment. Changes are applied directly to your manuscript with automatic before-and-after snapshots, so you can always roll back. Every suggested edit is a proposal you accept or reject — nothing is auto-applied unless you turn that on.
(3) In Claude Code or Codex
GhostAI Plugin
A one-time purchase, or included in the GhostAI Accelerator
The GhostAI Plugin is a set of skills you install into Claude Code or Codex. The GhostAI Plugin is available as a standalone purchase, and is also included in the GhostAI Accelerator. Run the install script, and every skill works on any Markua manuscript — whether it's a Leanpub book or not.
The GhostAI Plugin works with your existing Claude Code or Codex account. The only usage charges with the GhostAI Plugin are what you get charged by Anthropic for Claude Code, or OpenAI for Codex. So if you're on a monthly subscription and stay under your usage limit, it's included.
The GhostAI Plugin is ideal for authors who live in Claude Code or Codex all day, and are happy editing files on their computer. Frankly, if you're a software developer who loves Claude Code or Codex, the GhostAI Plugin is the best experience for you. If you're writing with GhostAI on your computer, then our recommendation is to have your book in GitHub writing mode. Dropbox writing mode also works.
The better deal
The GhostAI Accelerator
For almost all authors, the GhostAI Accelerator is a better deal than the GhostAI Plugin on its own. It includes the plugin, plus a year of Ultra Author, a seat at a Book Weekend and Publish on Amazon.
A year of Ultra Author$997/year on its own
A year of AI usage for the GhostAI Drawer in the Leanpub editor and for GhostAI Studio, arriving a month at a time, with the rest of Ultra Author: ten times the AI usage of Max, member prices on the AI tools, two months on The Shelf, a priority queue for two Launch videos and a Leanpub Podcast interview with Len, and your support email handled first. Already a Max or Ultra member? The year is added onto your own membership instead.
The GhostAI Plugin$997 on its own
A set of downloadable skills for Claude Code or OpenAI Codex, on your own computer and your own subscription. Yours forever, with every update we ever make, downloaded from your library. If it's already yours, nothing changes.
A seat at a Book Weekend$497 on its own
Two days live on Zoom, Saturday and Sunday, 7 am to 2 pm Pacific, run by Peter and the team, where you get started with the GhostAI skills and publish your in-progress book on the Sunday. Pick the closest weekend that fits your schedule, at checkout or later from your library, at any future Book Weekend with seats.
Publish on Amazon$1299 on its own
Everything in Publish on Amazon, our concierge service that puts your finished book on Amazon in Kindle, paperback and hardcover, with the covers and the listing decided for you and ten free paperback copies. You redeem it once from your library when your book is at 100% on its progress bar and published, and Leanpub does the work.
Total Value: $3790
Sold separately, the four parts cost $3790.
Your price
The GhostAI Accelerator
$1499
For $502 more than the plugin on its own, the GhostAI Accelerator adds a year of Ultra Author, a seat at a Book Weekend and Publish on Amazon.
Books Die Alone
Want to learn why we built GhostAI, and why publishing in-progress is so important? See Books Die Alone: why a book nobody has read is a book at risk, and what a first version actually needs.
GhostAI helps you especially in the crucial phase, from when your book is created to when it's first published, so that your book doesn't die alone.
Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
Learn more about writing on Leanpub
Write and Publish on Leanpub
You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!
Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.
Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.