AI writer that drafts full-length books, novels and screenplays from your idea
AI Dungeon vs Sudowrite
Pricing, features, platforms and who each one suits — side by side.
Choose AI Dungeon if…
- you want a free plan to start with
- you're in its core audience: interactive fiction fans, tabletop roleplayers
Choose Sudowrite if…
- you want to trial it before paying
- you're in its core audience: novelists, screenwriters
Side by side
Full feature lists
A
AI Dungeon
- Open-ended AI-driven text adventures
- Player choices steer the story
- Premade genres like fantasy and post-apocalyptic
- Custom scenario builder
- Community-made adventures
- Play online or in the app
S
Sudowrite
- Write suggests the next 300 words in your voice
- Story Bible goes from idea to outline to chapters
- Expand, Describe and Rewrite tools for revision
- Feedback with five actionable improvement areas
- Canvas for plot points, character arcs and twists
- Brainstorm for names, items and titles
- Visualize generates art from character descriptions
- 1,000+ plugins, including custom ones
What you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
AI Dungeon
Free. Plan details aren't published.
Sudowrite
Strengths and limitations
AI Dungeon
- Described as free to play
- Players can build custom scenarios
- Library of community-made adventures
- Regular named updates from the developer
- Text-based play only
Sudowrite
- Free trial with no credit card required
- Company claims no rights over your writing or the generated text
- Your writing is not used to train models
- Max plan rolls unused credits over for 12 months
- AI features need a paid plan after the trial
- Usage is limited by monthly credits
- Developmental edits and beta reads are not in the Hobby & Student plan
- Some features may fall back to English
More comparisons
Other options to consider
AI writer that drafts full-length books, novels and screenplays from your idea
Browser-based novel writing platform with a story codex and bring-your-own AI

AI role-play chat and story generator for interactive fiction fans
Chat with AI characters for fun, roleplay and conversation
R

AI companion app for conversation, voice calls and emotional support
K
AI companion app for building custom characters to chat, call and share selfies
Facts from each vendor's public pages. Editorial policy

