Sudowrite

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• Strong opt-out posture: Author content is not used to train future models without consent — material concern for unpublished manuscripts.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.