Text in · Book out

Write a whole
book from
one prompt.

Describe the story you want. Book Forge invents the title, the pen name and the whole arc, writes it chapter by chapter in your language, and typesets the result into a finished PDF you can download — or delete whenever you like.

Start writing →My library

Languages

Genres

Tones

556

Chapters max

Every dial is yours

Four settings and a custom prompt decide everything the writer does.

01 · Language

EnglishEnglish
SpanishEspañol
Chinese中文
Japanese日本語

02 · Genre

Comedy
Wit, timing, absurdity
Romance
Longing, tension, tenderness
History
Period detail, real stakes
Crime
Clues, pressure, consequence
Fairytale
Myth, magic, moral
Children's
Warm, simple, playful

03 · Tone

HappyBright, hopeful, buoyant
SadMelancholy, aching, quiet
MadFurious, restless, biting

04 · Size

Up to 556 chapters and 556 pages. Longer books take more minutes to write — you see the estimate before you start, and live progress while the AI works.

Set the book

Language, genre, tone, length — plus your own prompt describing the story you want told.

Watch it write

The AI drafts a story bible, then writes each chapter in order, continuing from the last one.

III

Take the PDF

Cover, contents and chapters are typeset into a PDF. Download it, or delete the PDF in one click.

Your first chapter is one prompt away.