Give Book Factory your topic or premise, your reader, and how many chapters you want. It returns a chapter-by-chapter outline you can edit, reorder, and expand — and then draft the book from, chapter by chapter, in the same project.
Free plan: $4 of AI writing included — about 40 chapters — and no API key needed.
Real screen recordings of the product.
Choose fiction or non-fiction, enter a topic or premise, the audience, and 6–24 chapters. Add a direction note for voice and focus. The outline comes back in about a minute with a title and summary for every chapter.
Each outline entry becomes a chapter you can draft with one click. The draft follows that chapter's summary, the chapters around it, and your direction.
Build the finished manuscript as EPUB, PDF, a KDP paperback interior, or HTML.
Each time a chapter is written or saved, it's scored by Jev, a fast judge model from TypeSafe, against a fixed bank of questions for its book type — plus a continuity pass that reads it beside the chapters before it and checks it against the facts they established. Findings flow straight into the editor pass as concrete fixes.
No problems flagged.
Style issues flagged, each with a specific fix for the editor pass.
A high-confidence blocking problem — the book won't pass the publish-ready check until it's fixed or you override it as a labelled draft.
Chapter verdicts roll up into checks no single chapter can answer.
A single book grade in the Quality tab — withheld, with the reason, until enough of the book has been measured to mean something.
For fiction and non-fiction. High-confidence problems block the final build; you can answer a finding back with your reason, and a build that goes ahead on one says so.
Facts, names, and events checked against everything earlier chapters established — plus numbering, cross-references, and a real ending.
Totals, balances, and percentages are recomputed, so a figure that doesn't add up gets caught instead of printed.
For non-fiction: does the book build toward something, are the chapters in a defensible order, is anything missing or said twice. Advice, not a gate.
Every chapter also gets a slop score: how densely it uses the words and phrasing machine prose overuses, built on the open-source slop-score lists behind the EQ-Bench creative-writing leaderboard.
A good outline is a set of decisions, not a table of contents. Before you draft, check that it does these things — and edit it until it does.
Non-fiction outlines are organized around what the reader learns or does in each chapter. Fiction outlines are built from your premise and readership, with a cast of characters you can refine before drafting.
An illustrative outline for the premise "A retired baker solves a murder at her town's fall festival." Generated outlines follow your own premise, readership, and chapter count.
Yes. Outlines are included on the Free plan, which comes with $4 of AI writing — an outline costs a small fraction of that — and needs no API key.
Yes. You can rename, rewrite, reorder, add, and remove chapters before (and after) drafting.
Yes. You can use the outline as a plan and write some or all chapters yourself in the built-in editor, or start a project manually without AI generation at all.
You do. Your books are private to your account, Book Factory does not train on your content, and you can export everything at any time and publish it wherever you like.