Sudowrite
Free tierThe non-judgmental AI writing partner built exclusively for fiction and novel writing
Free tier available·Non-technical·Powered by Sudowrite (Muse 1.5, proprietary)
Key strengths
Purpose-built for fiction and novel writing with story-aware AI (Muse 1.5)End-to-end story development from idea to full manuscript via Story BibleStyle-matching AI that writes in the author's own voiceRich toolset including Write, Rewrite, Expand, Describe, Feedback, and CanvasPlugin ecosystem with 1,000+ extensions for specialized writing tasks
Free tier + paid plans · from $10 USD/mo
San Francisco, United States
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Technical Integration & Setup
Sudowrite is a fully hosted web application — no local installation or infrastructure setup is required. It is accessed entirely through the browser at sudowrite.com.
Model
- Powered by Muse 1.5, a proprietary large language model fine-tuned specifically on fiction writing tasks. This model infers character profiles, narrative tone, and plot trajectory from the user's existing manuscript context before generating output.
Plugin System
- Sudowrite supports a plugin architecture with 1,000+ plugins. Developers and power users can build custom plugins to extend functionality — such as reader simulation, character dialogue, screenplay conversion, and more.
- Plugin development documentation is available within the platform.
Editor Features
- 8 themes + 5 dark modes with a full-screen focus mode
- Project/chapter organization within a structured document tree
- Inline AI tools triggered contextually (highlight text → Rewrite/Expand/Describe)
Image Generation
- Visualize generates images directly from character sheets and world-building documents, integrating AI image generation into the fiction workflow.
Authentication
- Supports Google OAuth and standard email/password sign-up.
- No public REST API is currently documented for external developer access.