KudoWrite
What KudoWrite is
KudoWrite is a browser-based AI co-writer for fiction that helps develop a novel one beat at a time while retaining story context. Writers sketch a beat, ask the AI to write in their voice, revise or expand the passage, and commit it so the story memory changes. A story bible grows during the project, alongside a running book summary and chapter context that can carry from chapter 1 through chapter 30. Its chat can discuss a writing problem with access to every page. The service supports romance, horror, dark and explicit fiction, and stories up to 300,000 words. Users provide their own OpenRouter or Mistral API key, select models, and can add custom model IDs. KudoWrite says prompts and responses go directly from the browser to the chosen provider instead of through its servers. Account data and writing are stored in Supabase-hosted PostgreSQL in Ireland, with row-level security and TLS in transit. The free plan costs nothing and includes one credit; paid one-off credit plans are also listed.
Who it suits
It suits fiction writers who want structured beat-by-beat drafting, persistent story context, and model choice through OpenRouter or Mistral. Users must be at least 18.
What it does well
- Beat-based drafting workflow
- Story bible and chapter context
- Supports stories up to 300,000 words
- Prompts bypass KudoWrite servers
- Free plan includes one credit
What to know first
- Requires your own model-provider API key
- Browser-based platform only
- Free plan has one credit
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Free; includes 1 credit · 1 credit · try everything | Free |
| Polished book | One-off payment · 1,000 credits · ≈ a polished, well-revised book | $12.50, paid once |
| Short novel | One-off payment · 100 credits · ≈ a short novel | $3.50, paid once |
| Full book | One-off payment · 500 credits · ≈ a full book | $7.50, paid once |
As kudowrite.com lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
KudoWrite focuses on long-form fiction while keeping beats, summaries, and chapter context connected. Its provider-key model gives writers control over model selection, with one free credit and paid credit bundles.
Facts from KudoWrite's own pages
- Age requirement
- The terms require users to be at least 18 years old and prohibit generating sexual content involving minors. · kudowrite.com, 12 Oct 2026
- AI request privacy
- The policy says prompts and model responses go directly from the browser to the selected provider and do not pass through or get logged by KudoWrite servers. · kudowrite.com, 12 Oct 2026
- API key security
- The policy says provider API keys are encrypted at rest and sent from the browser directly to the selected provider when an AI feature is used. · kudowrite.com, 12 Oct 2026
- Browser app
- The terms describe KudoWrite as a browser-based fiction-writing tool for drafting, rewriting and expanding prose with AI models. · kudowrite.com, 12 Oct 2026
- Chat
- Writers can talk through a problem with a chat that has read every page. · kudowrite.com, 12 Oct 2026
- Content and length
- The site says it supports romance, horror, dark and explicit fiction, and stories up to 300,000 words. · kudowrite.com, 12 Oct 2026
- Data deletion and export
- Users can delete projects or all writing in the app, and can email support to request account deletion or a JSON copy of their data. · kudowrite.com, 12 Oct 2026
- Data storage
- The privacy policy says account data and writing are stored in a PostgreSQL database hosted by Supabase in Ireland, with row-level security and TLS encryption in transit. · kudowrite.com, 12 Oct 2026
- Drafting workflow
- Writers sketch a beat, have AI write it in their voice, revise or expand it, then commit it so the story memory updates. · kudowrite.com, 12 Oct 2026
- Free plan
- Yes · kudowrite.com, 20 Sept 2026
- Long-form writing
- Yes · kudowrite.com, 20 Sept 2026
- Model integrations
- The app lets users paste a custom model ID from OpenRouter or Mistral and add it to their model list. · kudowrite.com, 12 Oct 2026
- Model providers
- Users supply their own OpenRouter or Mistral API key and choose the models they want to run. · kudowrite.com, 12 Oct 2026
- Purpose
- KudoWrite describes itself as an AI co-writer for fiction that helps write a novel one beat at a time while retaining story context. · kudowrite.com, 12 Oct 2026
- Story memory
- The app offers a story bible that fills in as the writer works, a running book summary, and chapter context that can carry from chapter 1 to chapter 30. · kudowrite.com, 12 Oct 2026
- Training and provider policies
- KudoWrite says it does not train models on users’ writing; whether the chosen provider uses prompts or outputs for training depends on that provider and model. · kudowrite.com, 12 Oct 2026
Where KudoWrite stands on Freedom251
- AI Writing Tools#126 of 269