Best AI Book Writing Software in 2026
Updated
In short: Keter Labs is ranked #1 of 27 as of 5 October 2026, ahead of AIWriteBook Audiobook Studio and BookBud.ai. The best-ranked option with a free plan is AIWriteBook Audiobook Studio. The lowest first paid tier on this page is Novelcrafter at $4/mo.
AI book writing software can support the process from shaping an outline to revising chapters and exporting a manuscript. Compared on book outlining, chapter workspace, continuity tools, and rewrite controls, the ranked entries offer different features to consider as your draft develops. Bookwiz and Pendraic lead the options, with Jenova Creative Fiction Writer and FireQuill also near the top. Check maximum words and export formats against the length and workflow you have in mind. Free-plan availability and paid-from pricing can help you assess the practical fit, while continuity and revision features matter as you work across chapters.
27 AI book writing software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
AI Book Writing Software, one module each. A lit port is something its maker publishes; 1 of the 25 on this page have a public API.
- 01 Keter Labs API yesOSS not on recordFREE yesDOCS 7.3$29/mo
- 02 AIWriteBook Audiobook Studio API not on recordOSS not on recordFREE yesDOCS 6.0$12/mo
- 03 BookBud.ai API not on recordOSS not on recordFREE yesDOCS 6.0$15.83/mo
- 04 Bookwiz API not on recordOSS not on recordFREE yesDOCS 6.0$14/mo
- 05 Jenova Creative Fiction Writer API not on recordOSS not on recordFREE yesDOCS 6.0$20/mo
- 06 Pendraic API not on recordOSS not on recordFREE yesDOCS 6.0$14.99/mo
- 07 AI Novel Studio API not on recordOSS not on recordFREE yesDOCS 5.9Free
- 08 Calliope API not on recordOSS not on recordFREE yesDOCS 5.9€8.25/mo
- 09 FireQuill API not on recordOSS not on recordFREE yesDOCS 5.9$10/mo
- 10 Manuscripts.ai API not on recordOSS not on recordFREE yesDOCS 5.9$25/mo
- 11 ShyEditor API not on recordOSS not on recordFREE yesDOCS 5.9$10/mo
- 12 Squibler API not on recordOSS not on recordFREE yesDOCS 5.7$29.99/mo
- 13 Automateed API not on recordOSS not on recordFREE not on recordDOCS 5.6
- 14 NovelAI API not on recordOSS not on recordFREE not on recordDOCS 5.4$10/mo
- 15 Novelcrafter API not on recordOSS not on recordFREE not on recordDOCS 5.4$4/mo
- 16 Sudowrite API not on recordOSS not on recordFREE not on recordDOCS 5.4$10/mo
- 17 Loreon API not on recordOSS not on recordFREE not on recordDOCS 5.2Free
- 18 Quillstone API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 19 Raptor Write API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 20 Scriptorium API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 21 DeepQuill API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 22 First Book ai API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 23 Kosmos API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 24 Novellum API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 25 Storybible API not on recordOSS not on recordFREE not on recordDOCS 5.0
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Maximum words | Book outlining |
|---|---|---|---|---|---|---|---|---|
| 1 | Keter Labs | 7.3 | Free plan | $29/mo | Yes | 29 /mo | — | — |
| 2 | AIWriteBook Audiobook Studio | 6.0 | Free plan | $12/mo | Yes | 12 /mo | — | Yes |
| 3 | BookBud.ai | 6.0 | Free plan | $15.83/mo | Yes | 19 /mo | — | Yes |
| 4 | Bookwiz | 6.0 | Free plan | $14/mo | Yes | 14 /mo | — | Yes |
| 5 | Jenova Creative Fiction Writer | 6.0 | Free plan | $20/mo | Yes | 20 /mo | — | Yes |
| 6 | Pendraic | 6.0 | Free plan | $14.99/mo | Yes | 14.99 /mo | — | Yes |
| 7 | AI Novel Studio | 5.9 | Free plan | Free | Yes | — | — | Yes |
| 8 | Calliope | 5.9 | Free plan | €8.25/mo | Yes | — | — | Yes |
| 9 | FireQuill | 5.9 | Free plan | $10/mo | Yes | 10 /mo | — | — |
| 10 | Manuscripts.ai | 5.9 | Free plan | $25/mo | Yes | 29 /mo | — | Yes |
| 11 | ShyEditor | 5.9 | Free plan | $10/mo | Yes | 10 /mo | — | Yes |
| 12 | Squibler | 5.7 | Free plan | $29.99/mo | Yes | — | — | — |
| 13 | Automateed | 5.6 | No | — | Yes | — | — | Yes |
| 14 | NovelAI | 5.4 | No | $10/mo | No | 10 /mo | — | — |
| 15 | Novelcrafter | 5.4 | No | $4/mo | No | 4 /mo | — | — |
| 16 | Sudowrite | 5.4 | No | $10/mo | No | 10 /mo | — | — |
| 17 | Loreon | 5.2 | Free plan | Free | Yes | — | — | Yes |
| 18 | Quillstone | 5.1 | No | — | Yes | — | — | Yes |
| 19 | Raptor Write | 5.1 | No | — | Yes | — | — | Yes |
| 20 | Scriptorium | 5.1 | No | — | Yes | — | — | Yes |
| 21 | DeepQuill | 5.0 | No | — | No | — | — | Yes |
| 22 | First Book ai | 5.0 | No | — | No | — | — | Yes |
| 23 | Kosmos | 5.0 | No | — | No | — | — | Yes |
| 24 | Novellum | 5.0 | No | — | Yes | 15 /mo | — | — |
| 25 | Storybible | 5.0 | No | — | No | — | — | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI book writing software is ranked first on Inferse?
Keter Labs is ranked #1 of 27 with a score of 7.3. AIWriteBook Audiobook Studio is second and BookBud.ai third.
How many of these have a free plan?
13 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Novelcrafter has the lowest first paid tier we found: $4/mo.
How is this list 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.