Sudowrite review
7.2/10★★★★★AI co-writer for fiction with a Story Bible, style-matched drafts and its own Muse model
- Best for
- Novelists and screenwriters who want an AI co-writer that understands story
- Price
- Free trial · from $10/month
Free: Free trial with no credit card - Platforms
- Web
- Made by
- Sudowrite · since 2020
What it is
Sudowrite is built for novelists and screenwriters: its Story Bible takes you from idea to outline, chapter beats and draft, while Write, Describe, Expand and Rewrite help scene by scene in your own style. It runs its own fiction model, Muse, alongside 30+ other models including Anthropic's Claude. It was founded by writers Amit Gupta and James Yu.
Latest: Sudowrite's own fiction model, Muse 1.5, is now available (October 2026).
What the AI does
- Story Bible from outline to draft
- Write autocomplete in your style
- Describe, Expand and Rewrite tools
- Feedback and developmental edits
- Canvas and Brainstorm for planning
- Muse fiction model plus 30+ other models
Pros and cons
- Purpose-built for fiction, with tools for description, pacing and continuity
- Story Bible keeps characters and plot consistent
- Matches your prose style
- Easy cancellation and pausing
- Web only, with few integrations
- Credit-based plans can run out on long projects
- Generated prose often needs heavy editing
How it scores
The best tool here for fiction drafting, but it is web-only and credit limits make heavy use pricey.
Feature checklist · 3 of 9
- Grammar and spelling checks (no)
- Rewrites or paraphrases your sentences (yes)
- Adjusts tone, formality or length (no)
- Drafts new text from a prompt or template (yes)
- Works inside other apps via extension, add-in or keyboard (no)
- Supports languages other than English (no)
- Plagiarism or AI-detection check (no)
- Readability or in-depth style reports (no)
- Custom style guide, brand voice or matches your own style (yes)
Alternatives
See all Sudowrite alternatives, ranked →
- Grammarly 8.6/10Anyone who wants polished, correct writing in every app without copying text into a separate tool
- QuillBot 8.1/10Students and non-native English writers who want to rephrase, summarise and cite on a budget
- LanguageTool 8.0/10People who write in more than one language, especially European languages
- ProWritingAid 7.7/10Novelists and long-form writers who want deep editing reports, not just error fixes