Calliope
8.0#19 in writing appsFrom €99 a yearFree planWebAPI
VisitCalliope vs Overleaf
What both publish
| Fact | Calliope | Overleaf |
|---|---|---|
| Audience | The maker describes Calliope as intended for authors who want AI help with thinking and organisation while writing their own book. | Overleaf says it was developed by researchers to make scientific and technical writing simpler and more collaborative, and serves research institutions and businesses. |
| Free plan | Yes | Yes |
| Headquarters | Bratislava, Slovakia | London, United Kingdom |
| Integrations | The MCP connector supports Claude, ChatGPT, and Cursor, and Calliope also documents a Writer API. | Overleaf documentation lists Git and GitHub synchronization, Dropbox, ReadCube, Zotero, Mendeley, R code (knitr), Grammarly, and Google Drive import among its integrations and add-ons. |
| Purpose | Calliope is a manuscript studio for novelists, with AI for research, canon memory, and consistency checking. | Overleaf is an online platform for collaborating in LaTeX, compiling documents, and refining them. |
Calliope plans
- Free editorFree
- €10 credit pack€10, paid once
- €50 credit pack€50, paid once
- €100 credit pack€100, paid once
- Subscription monthly€12 a month
- Subscription annual€99 a year
Overleaf plans
- FreeFree
- Student$8.25 a month
- Standard$16.75 a month
- Pro$33.25 a month
- OrganizationsPriced on request
Pick Calliope if…
Calliope may suit book writers who want outlining, chapter organization, and continuity tools in a web editor. Its free plan is relevant to writers working on unlimited books.
Pick Overleaf if…
You want what its maker publishes above — check its page for the details.