Best Kosmos Alternatives in 2026
Updated
20 platforms from AI book writing software ranked against Kosmos on the same published basis.
- 1Kosmos vs Keter Labs
- 2Kosmos vs AIWriteBook Audiobook Studio
- 3Kosmos vs BookBud.ai
- 4Kosmos vs Bookwiz
- 5Kosmos vs Jenova Creative Fiction Writer
- 7Kosmos vs Pendraic
- 8Kosmos vs AI Novel Studio
- 9Kosmos vs Calliope
- 10Kosmos vs DeepQuill
- 11Kosmos vs FireQuill
- 12Kosmos vs Loreon
- 13Kosmos vs Manuscripts.ai
- 14Kosmos vs Novellum
- 15Kosmos vs Novilot
- 16Kosmos vs Quillstone
- 17Kosmos vs Raptor Write
- 18Kosmos vs Scriptorium
- 19Kosmos vs ShyEditor
- 20Kosmos vs Squibler
- 21Kosmos vs Storybible
Kosmos alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Keter Labs | 7.3 | Free plan | $29/mo | API, Web |
| 2 | AIWriteBook Audiobook Studio | 6.0 | Free plan | $12/mo | Browser, Web |
| 3 | BookBud.ai | 6.0 | Free plan | $15.83/mo | Web |
| 4 | Bookwiz | 6.0 | Free plan | $14/mo | Web |
| 5 | Jenova Creative Fiction Writer | 6.0 | Free plan | $20/mo | Android, iOS, Web |
| 7 | Pendraic | 6.0 | Free plan | $14.99/mo | Mac, Web, Windows |
| 8 | AI Novel Studio | 5.9 | Free plan | Free | Web |
| 9 | Calliope | 5.9 | Free plan | €8.25/mo | Web |
| 10 | DeepQuill | 5.9 | Free plan | $3.33/mo | Mac, Windows |
| 11 | FireQuill | 5.9 | Free plan | $10/mo | Web |
| 12 | Loreon | 5.9 | Free plan | Free | Web |
| 13 | Manuscripts.ai | 5.9 | Free plan | $25/mo | Web |
| 14 | Novellum | 5.9 | Free plan | $15/mo | Web |
| 15 | Novilot | 5.9 | Free plan | $19/mo | Web |
| 16 | Quillstone | 5.9 | Free plan | Free | iOS, Mac |
| 17 | Raptor Write | 5.9 | Free plan | Free | Web |
| 18 | Scriptorium | 5.9 | Free plan | Free | Windows |
| 19 | ShyEditor | 5.9 | Free plan | $10/mo | Web |
| 20 | Squibler | 5.9 | Free plan | $29.99/mo | Web |
| 21 | Storybible | 5.9 | No | $16.67/mo | Web |
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Questions about Kosmos alternatives
What is the best alternative to Kosmos?
Keter Labs, number 1 in AI book writing software with a score of 7.3 out of 10. The others here: AIWriteBook Audiobook Studio, BookBud.ai, Bookwiz and 16 more.
What is the best free alternative to Kosmos?
Keter Labs is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.