Calliope vs Kosmos
| Calliope | Kosmos | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | |
| Paid from | €8.25/mo | Free |
| Platforms | api, Web | Web |
| Free plan | Yes | No |
| Book outlining | Yes | Yes |
| Chapter workspace | Yes | Yes |
| Continuity tools | Yes | Yes |
| Rewrite controls | No | No |
| Export formats | Markdown, Google Docs, DOCX, EPUB, PDF | Markdown |
Listed together in Best AI Book Writing Software