The AI Writing Studio for Serious Authors

From First Word
to Final Chapter.

MasterProse combines world-class AI prose generation, stunning illustration, seamless translation, and professional multi-format publishing — all in one extraordinary writing studio.

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∞
Stories to Tell
AI
Prose Generation
8+
Export Formats
6
Languages
Writer at work
"Every great story begins with a single sentence."
Journaling
Writing hands
How It Works

Your novel, from outline
to bookshelf.

1

Set Your Vision

Define your genre, characters, tone, and arc. MasterProse learns your world.

2

Generate Chapters

AI crafts publication-quality prose chapter by chapter, judged for literary excellence.

3

Illustrate & Refine

Add AI-generated illustrations, edit in the built-in prose editor, check continuity.

4

Publish Everywhere

Export to DOCX, EPUB, PDF, HTML. KDP-ready. Translated into any language.

Every Tool You Need

One studio.
Every tool your story requires.

✍️

AI Prose Generation

World-class language models calibrated for literary quality. Chapters that read like a bestseller.

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🎨

Illustration System

Beautiful AI-generated artwork for every chapter, embedded directly into your published book.

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🌍

Translation

Publish in any language. Full literary translations that preserve your voice and nuance.

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📦

Multi-Format Export

DOCX, EPUB, PDF, HTML — individually or as a complete ZIP. One click to publishing-ready.

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🖼️

Cover Editor

Professional KDP-optimized covers designed with AI assistance, inside your workflow.

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🔍

Continuity & Canon

Tracks every character, location, and plot point. Catches contradictions before readers do.

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Built for Every Writer

Whether it's your
first novel or your fiftieth.

Writer with notebook
The aspiring novelist finding their voice
Professional author
The prolific indie author on a deadline
Student writing
Writer at cafe
The storyteller who just needs the right tool
Writer working
Start Today — Free

Your book won't write itself.
But we can help.

Free to start. No credit card required. Your first chapters are on us.

Begin Using MasterProse Now →
✍️
AI Prose Generation

Prose That Reads
Like a Bestseller.

MasterProse doesn't just produce words. It crafts chapters with narrative momentum, authentic voice, and the rhythmic quality that makes readers turn pages.

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How It Works

Your outline becomes
a living manuscript.

Define your story — genre, characters, tone, chapter structure. MasterProse generates complete, polished prose for each chapter, drawing on your world-building details for consistency and authenticity.

  • Chapter-by-chapter generation — full prose, not summaries or outlines
  • Literary quality scoring — every chapter is evaluated before delivery
  • Regeneration on demand — not satisfied? One click to try again
  • Voice consistency — tone maintained across all chapters
  • Genre awareness — calibrated for romance, thriller, literary fiction, fantasy
"The fog came in off the harbor like a slow thought, curling around the pilings and dissolving what little certainty remained in the night. She watched it from the window, coffee untouched, listening to the silence between her heartbeats…"
Quality Score
91
Literary quality · Pacing · Voice · Tension
Writer working on novel

"The hardest part of writing a novel used to be starting. MasterProse changed that."

The Generation Pipeline

Built for quality,
not just speed.

01

World-Building Context

Characters, settings, tone, and previous chapters feed every generation — ensuring the prose feels like one cohesive author wrote the whole book.

02

AI Drafting

State-of-the-art models produce a full chapter draft, with narrative structure, dialogue, description, and pacing calibrated to your genre.

03

Literary Judging

A second AI pass evaluates the draft for literary quality, voice consistency, and narrative momentum — ensuring publication standards.

Ready to write your
first chapter?

Start free. Your first chapters are on us.

Begin Using MasterProse Now →
🎨
Illustration System

Your Story,
Beautifully Illustrated.

Every chapter brought to life with AI-generated artwork that matches your narrative, characters, and world — embedded directly into your finished book.

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Chapter Illustrations

Art that understands
your narrative.

MasterProse's illustration engine reads your chapter text and generates artwork that reflects the mood, characters, and pivotal moments of that specific scene. Not stock imagery — illustrations created for your story.

  • Multiple art styles — painterly realism, graphic novel, watercolor, ink
  • Character consistency — your characters look the same across all chapters
  • Scene-specific generation — each illustration reflects actual chapter content
  • Full-page and inline formats — sized for print or e-reader display
  • Embedded in all exports — appears in DOCX, EPUB, HTML, and PDF
🌙
Chapter 3 Illustration
Painterly ✦ Graphic Novel Watercolor

Give your story a
face to remember.

Illustrations included in Author and Professional plans.

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🌍
Translation

Publish Without
Borders.

Translate your complete manuscript into any language — preserving the literary quality, voice, and nuance of your original prose.

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Books and writing

"A story told in one language
deserves an audience in all of them."

Literary Translation

Not translation.
Transcreation.

Generic translation tools turn prose into something mechanical and flat. MasterProse understands literary context — idioms, tone, character voice, and narrative rhythm — delivering manuscripts that read as well as the original.

  • Full manuscript translation — every chapter, scene, and line of dialogue
  • Voice preservation — your narrator's personality survives the language barrier
  • Multiple target languages — Spanish, French, German, Portuguese, Italian, and more
  • Separate export per language — each translation exports independently
  • Side-by-side editing — compare original and translation in the editor
Original · English
"She had learned long ago that silence was its own kind of answer — the loudest one, if you knew how to listen."
Translation · Español
"Hacía mucho que había aprendido que el silencio era su propia forma de respuesta — la más elocuente, si sabías escuchar."
🇪🇸 Español 🇫🇷 Français 🇩🇪 Deutsch 🇧🇷 Português 🇮🇹 Italiano

Your story deserves a
global audience.

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📦
Multi-Format Export

One Click to
Publishing-Ready.

Export your completed manuscript in every format publishers, editors, and readers expect — individually or as a complete ZIP package.

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Export Formats

Every format.
Every platform.

📝

DOCX — Word Document

Industry-standard for editors, agents, and publishers. Properly formatted with styles, headings, and chapter breaks.

📱

EPUB — E-Reader Format

Compatible with Kindle, Kobo, Apple Books, and every major e-reader platform. Includes your illustrations.

🖨️

PDF — Print-Ready

Professional typography, margins, and layout formatted to KDP paperback specifications. Ready for print-on-demand.

🌐

HTML — Web & Styled

A beautifully styled reading experience for web publication, and a clean manuscript format. Share a link or host your story online.

"Export once, publish everywhere. MasterProse handles the formatting so you can focus on the story."

  • Batch export — download all formats as a single ZIP in one click
  • Illustrated exports — illustrations embedded in every supported format
  • Translation exports — export each translation in all formats independently
  • KDP-optimized — margins, fonts, and dimensions matched to Amazon KDP specs
  • Plain text backup — always export a clean .txt for archiving

Your manuscript.
Ready for the world.

Begin Using MasterProse Now →
🖼️
Cover Editor

The Cover That
Sells Your Story.

Design professional book covers optimized for Amazon KDP — with AI-assisted imagery and typography tools built into your MasterProse workflow.

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Professional Cover Design

Judge a book.
Make it unforgettable.

A professional cover is the difference between a book that sells and one that doesn't. MasterProse gives every author access to professional-quality cover design without needing design skills or expensive software.

  • AI-generated cover imagery — describe your cover, get stunning artwork
  • Typography tools — title, author name, tagline positioning and styling
  • KDP-optimized dimensions — front cover, full wrap, and spine measurements
  • Genre-appropriate templates — starting points calibrated to your book's category
  • High-resolution PNG export — print-ready files at 300 DPI
🌙
THE MIDNIGHT
HARBOR
A NOVEL
KDP Front Cover · 1600 × 2560px

Your cover is waiting
to be designed.

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🔍
Continuity & Canon Checking

Your Story.
Always Consistent.

MasterProse tracks every character, location, and established fact across your entire manuscript — flagging contradictions before your readers find them.

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Canon Enforcement

Plot holes caught
before they cost you.

A character's eye color changes in chapter 14. A town that was three days' ride away is suddenly an hour. MasterProse reads your entire manuscript and builds a living canon — checking every new chapter against it automatically.

  • Character profiles — names, descriptions, relationships, and traits tracked
  • Location registry — every setting, distance, and geography catalogued
  • Timeline tracking — chronological events mapped and cross-referenced
  • Contradiction alerts — flagged inconsistencies with specific chapters
  • Full manuscript audit — scan all chapters at once for consistency issues
⚠ Continuity Report
Character Inconsistency
Elara's eyes are described as "grey" in Ch. 2 but "pale blue" in Ch. 11. Verify intended eye color.
Timeline Discrepancy
Ch. 4 establishes the festival "next moon." Ch. 7 places it "three weeks away." These dates conflict.
✓ Audit Complete
14 chapters checked · 2 issues found · 847 facts indexed

Write with confidence.
Ship without embarrassment.

Begin Using MasterProse Now →
Pricing

Write free.
Publish when you're ready.

Start with no credit card required. Your first chapters are on us. Pay only when you're ready to export and publish.

Free
Explore MasterProse at no cost. Experience the prose quality firsthand.
$0
No credit card required
  • ✦3 AI-generated chapters
  • ✦Unlimited prose editing
  • ✦5 chapter illustrations
  • ✦In-app manuscript preview
  • ✦Character & notes system
  • —Export to DOCX / EPUB / PDF
  • —Translation
  • —Unlimited generation
Start Free →
Most Popular
Author
Everything you need to write, illustrate, and publish your book.
$14.99 /month
or $19.99 per book, one-time
  • ✦Unlimited AI generation
  • ✦All export formats (DOCX, EPUB, PDF, HTML)
  • ✦5 illustrations per chapter
  • ✦Cover Editor
  • ✦Continuity & Canon checking
  • ✦Manuscript audit
  • —Translation
  • —Unlimited illustrations
Begin Writing →
Professional
For prolific authors and publishers who need everything, unlimited.
$39.99 /month
Cancel anytime
  • ✦Everything in Author
  • ✦Unlimited illustrations
  • ✦Full manuscript translation
  • ✦Export all translations in all formats
  • ✦Priority AI generation
  • ✦Multi-agent orchestration
  • ✦Commercial license
  • ✦Early access to new features
Go Professional →

Frequently Asked
Questions

Do I own the content I generate?

Yes. All prose, illustrations, and exported files you generate are yours. We make no claim to ownership of any content you create using MasterProse.

Per-book vs. monthly — which is better?

The $19.99 per-book option unlocks full export for a single project — ideal for one book. The $14.99/month subscription covers all your projects and is more economical for active writers.

Can I cancel anytime?

Absolutely. Cancel anytime with no penalty. You retain access for the remainder of your billing period, and all existing exported files are yours to keep.

Is my manuscript data private?

Your projects are stored securely in your personal account. We do not use your manuscript content to train AI models or share it with any third parties.

What payment methods do you accept?

All major credit and debit cards, Apple Pay, Google Pay, and PayPal — processed securely through Stripe. We never store your payment details.

Your story is waiting.
Start writing today.

Free to start. No credit card. Cancel anytime.

Begin Using MasterProse Now →