Sudowrite
Free tierThe non-judgmental AI writing partner built exclusively for fiction and novel writing
Key strengths
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Recent changes
- Models updated: Sudowrite (proprietary Muse & Ballad models) plus 30+ third-party models
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Sudowrite does not expose a public REST API in its documented feature set. Developer-adjacent extensibility is available through the Plugins ecosystem, which supports 1,000+ extensions and represents the primary integration surface. The platform runs on a dual-model architecture: proprietary Muse and Ballad models optimized for fiction generation, supplemented by 30+ third-party models selectable within the interface. Core generation primitives include:
- Write — continuation generation from existing prose context
- Rewrite — style/tone transformation of selected text
- Describe — sensory and scene description generation
- Expand — elaboration of condensed or outline-level content
The Story Bible module handles long-form project state (characters, world, plot), feeding context into generation calls. Canvas provides structured pre-writing and planning. Credit consumption varies by model and output length across the three billing tiers (225K / 450K / 2M credits per month).