# Sudowrite

> Fiction-only AI writing tool built around the proprietary Muse model and Story Engine, with prose generation, rewriting, and brainstorming designed for novelists.

Source: https://selfpublishingdirectory.com/writing-tools/sudowrite
Website: https://www.sudowrite.com
Category: Writing Tools (https://selfpublishingdirectory.com/writing-tools)
Pricing: paid — $120–$528
AI-powered: yes
Editor's pick: yes
Tags: ai-writing, prose-generation, fiction, brainstorm, rewriting, story-engine, popular
Last verified: 2026-05-07
Best For: Fiction authors who want a brainstorming co-writer for prose generation, scene rewriting, and creative unsticking
Collaboration: no
Platform: web
Tool Type: ai-writing-assistant

Sudowrite is the most established AI writing tool built specifically for fiction authors. Unlike general-purpose AI like ChatGPT, every feature is tuned for novel-length prose: continuing scenes in your voice, rewriting passages, brainstorming plot twists, generating descriptions, and developing characters.

## What You Get

- **Muse model:** Proprietary AI model fine-tuned on long-form fiction (with author consent), targeted at literary prose rather than generic chatbot output.
- **Story Engine 3.0:** Outline-driven generation that walks a novel from premise → synopsis → beats → chapters → scenes, keeping continuity across the manuscript.
- **Write feature:** Continues a scene in 300-word chunks, matching the style and POV of what you've already written.
- **Rewrite, Describe, Brainstorm, Canvas:** Sentence-level rewriting with style controls; sensory description generator; plot/character ideation; visual storyboarding for scenes.
- **Document editor:** Native prose workspace with chapter organization — not just a sidekick to another editor.

## Pricing

- **Hobby & Student:** $10/mo (225K AI words/mo, 1 user)
- **Professional:** $22/mo (1M AI words/mo)
- **Max:** $44/mo (2M AI words/mo, advanced models)
- All plans billed monthly; no annual discount. No permanent free tier — paid trial credits are common via promo codes.

## Strengths

- **Fiction-native output:** Genre awareness and prose quality consistently rated above general-purpose LLMs in author reviews.
- **Strong opt-out posture:** Author content is not used to train future models without consent — material concern for unpublished manuscripts.
- **Active community:** Discord and learning resources orient new users to fiction-specific workflows.

## Limitations

- **Web-only:** No native desktop or mobile apps; works in any modern browser.
- **Word quotas matter:** Heavy users on Hobby tier hit the 225K limit fast — expect to upgrade to Professional once you're drafting daily.
- **Not a replacement for craft:** Output still requires meaningful revision; treat as scaffolding, not final prose.
- **Cost vs BYOK alternatives:** NovelCrafter routes through your own API keys and can be cheaper at very high usage, though setup is more involved.