Tech riderRev. 9 Oct 2026
- 1Runs onWeb
- 2CostsFree plan
- 3Book outliningYes
- 4Chapter workspaceYes
- 5Continuity toolsYes
- 6Rewrite controlsNo
- 7Export formatsMarkdown
7 lines stated Written from the maker's own pages: kosmos.page
Overview
Kosmos is ranked #10 of 27 in AI book writing software on Specifiction. It runs on Web. There is a free plan.
Kosmos plans and pricing
All plansBeta Free Free during beta · requires your own Claude subscription · access approved manually kosmos.page · 9 Oct 2026
Compared on AI book writing software
- Free plan
- Nokosmos.page
- Book outlining
- Yeskosmos.page
- Chapter workspace
- Yeskosmos.page
- Continuity tools
- Yeskosmos.page
- Rewrite controls
- Nokosmos.page
- Export formats
- Markdownkosmos.page
Facts
- Purpose
- Kosmos is a structured methodology for producing nonfiction books that runs inside Claude Code.kosmos.page · 8 Oct 2026
- AI role
- The AI organizes research, tracks coverage, advises on structure, and reviews drafts; it does not write manuscript prose.kosmos.page · 8 Oct 2026
- Process
- Its four phases are ideation, research, structure, and writing.kosmos.page · 8 Oct 2026
- Research
- Kosmos organizes research into atomic tagged entries, tracks theme coverage, and identifies gaps for further research.kosmos.page · 8 Oct 2026
- Draft review
- During writing, AI reviews drafts against an 8-point checklist, tracks progress, and checks consistency.kosmos.page · 8 Oct 2026
- Web research
- Kosmos can search for material to fill research gaps when web access is available.kosmos.page · 8 Oct 2026
- File format
- Kosmos files are Markdown, and projects work as Obsidian vaults; the maker says users keep their files if they stop using Kosmos.kosmos.page · 8 Oct 2026
- Editor compatibility
- Obsidian is recommended, and the maker says any Markdown editor works.kosmos.page · 8 Oct 2026
- Prerequisite
- Kosmos requires Claude Code and a Claude Pro or Max subscription, which users provide themselves.kosmos.page · 8 Oct 2026
- Setup
- Claude Code handles installing the Kosmos CLI, authenticating, and setting up the project.kosmos.page · 8 Oct 2026
- Access
- During beta, the maker manually reviews and approves every signup.kosmos.page · 8 Oct 2026
- Beta status
- Kosmos is described as an early beta, and the maker says the tooling is new and feedback is welcome.kosmos.page · 8 Oct 2026
- Intended users
- The maker is seeking authors who want to try a structured approach to book production and are willing to give feedback.kosmos.page · 8 Oct 2026
- Maker
- The maker identifies himself as Joakim Achren and says he has self-published nonfiction books.kosmos.page · 8 Oct 2026
- Workflow
- The process has four phases: ideation, research, structure, and writing.kosmos.page · 9 Oct 2026
- Research organization
- Kosmos organizes research into atomic, tagged entries and tracks coverage across themes.kosmos.page · 9 Oct 2026
- Integrations
- Kosmos runs inside Claude Code; Obsidian is recommended, and any Markdown editor can be used.kosmos.page · 9 Oct 2026
- Requirements
- The maker says Claude Code requires a Claude Pro or Max subscription.kosmos.page · 9 Oct 2026
- Beta access
- During the beta, the maker manually reviews and approves account access.kosmos.page · 9 Oct 2026
- Support
- The maker asks beta users to share feedback about what works and what does not.kosmos.page · 9 Oct 2026
Best Kosmos alternatives
See all 20 All accessCh 01 Pendraic Free planFree trialMac from $14.99/mo7.7 All accessCh 02 DeepQuill Free planFree trialMac from $3.33/mo7.5 All accessCh 03 Jenova Creative Fiction Writer Free planAndroidiOS from $20/mo7.4 All accessCh 04 Automateed Free trialAndroidiOS 7.3 All accessCh 05 Bookwiz Free planFree trialWeb from $14/mo7.3 All accessCh 06 Loreon Free planFree trialWeb Free to start7.3
Where it ranks on Specifiction
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Sources
- kosmos.page· checked 8 Oct 2026