Scriptava vs Sudowrite
Sudowrite sells AI credits for its own models. Scriptava works with the Claude or ChatGPT you already pay for.
| Feature | Scriptava | Sudowrite |
|---|---|---|
| How the AI is paid for | Your own Claude or ChatGPT | Monthly AI credits |
| Price | 21 days free, then from £5 a month | From $10 a month |
| Running out mid-book | No credits to run out | Possible when the month’s credits are used |
| Works inside Claude or ChatGPT | Yes | No |
| Reviews every chapter | Ten reviews, which you can change | Edits and beta reads on higher plans |
Their details checked 7 November 2026 on their own website, with prices in US dollars. Prices and plans can change.
The main difference
Sudowrite is a writing app with its own AI. Its plans buy a monthly allowance of credits, and the bigger plans buy more.
Scriptava has no AI of its own to sell. It holds the book and reviews every chapter, and your own Claude or ChatGPT does the writing. If you already pay for one, you are not paying for AI twice.
When Sudowrite may suit you better
If you do not use Claude or ChatGPT and want everything in one app, or you want its own fiction models, Sudowrite is built for that.
When Scriptava suits you better
- You already pay for Claude or ChatGPT.
- You want to plan and write by talking it through, in the chat you already use.
- You want every chapter checked for continuity, clichés and clarity before you read it.
- You want to try it free for 21 days, with no card.