№ I · Edition
Octavo
First drafts and exploration
Free$0 forever, no credit cardFree$0 forever, no credit card
- 1 project
- 3 research files (max 5 MB each)
- All AI features, limited usage
- PDF export with Chaptora cover page
- Version history
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Three editions.
Every price in plain sight.
Choose the edition that fits the manuscript in front of you. Every plan shows what you pay per month, monthly or annually.
№ II · EditionMost chosen
Quarto
For serious writing
$20per month, billed monthly$16.67per month, billed annually as $200 · save 17%
- Unlimited projects
- 50 files per project (max 50 MB each)
- 10× more AI usage than Octavo
- EPUB and clean PDF export
- Frontmatter & backmatter editor
- Full agent access
№ III · Edition
Folio
For power users and professionals
$100per month, billed monthly$83.33per month, billed annually as $1,000 · save 17%
- Everything in Quarto
- Unlimited research files (max 200 MB each)
- 5× more AI usage than Quarto
- Priority queue (faster responses)
- Early access to new models
All prices are in USD. Annual plans are charged once per year; the figure on each card is what that works out to per month.
What counts as AI usage? Using Chaptora’s AI features. Each edition’s allowance is stated in its feature list.