The whole editor is free — chapters, story bible, character tracking, transliteration, DOCX export. The AI co-author lives in Pro at $5/mo, and your subscription funds the models that power it.
The full editor, free forever
Hire your AI co-author
$5/mo or $50/year. Cancel anytime. Your writing is always exportable.
Pro unlocks the AI co-author; credits are how it gets paid. 60+ tools that know your characters, plot, and voice. Top up any amount — every credit funds the models so the agents keep getting better.
Top up any amount. Credits never expire. One wallet across all BookOS apps.
The full editor, forever. 8 content canvases, chapters, the Story Bible (create and edit entries by hand), character tracking, transliteration in 8 Indian languages, DOCX export, and version snapshots. No AI — that's the one thing reserved for Pro.
The editor is 100% free. The AI co-author is part of Pro ($5/mo). We made it that way on purpose: subscriptions fund the models, so we can keep improving the agents instead of cutting corners on a “free” AI that quietly gets worse.
The AI co-author first — chat that knows your whole book, all models, inline AI edits, manuscript-aware tools, and automatic story-bible extraction. Plus the full story bible with relationship map, PDF/EPUB export, collaboration for up to 10 people, unlimited version history, custom domain, and API access. $5/mo or $50/year.
Think of it as funding your co-author. Pro unlocks the AI; credits are how the work gets paid for. Top up any amount from $2 to $100 — the AI draws on credits when you ask it to write, edit, research, or generate covers. Credits never expire and work across all BookOS apps.
Collaboration is a Pro feature. On Free, you can write and export. Upgrade to Pro to invite co-authors, editors, beta readers, and proofreaders.
Credits never expire. Most writers find a $5 top-up lasts a long time. You can see your balance and usage in the settings page at any time.
Always. DOCX export is available on every plan, including Free. Your writing is yours — we never lock it in. PDF and EPUB export requires Pro.