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Mirabilis

Pricing

Evidence-first publishing, priced for how you write

Start free with one book. Upgrade when you need the editorial board, collaborators, print-ready export or a bigger AI allowance.

MonthlyAnnual save 20%

Author

Everything one writer needs to finish a book.

$23 / month

Billed $278 a year

  • 3 books
  • Evidence graph, Book Bible, voice profile
  • Editorial board and Scorecard
  • $30 of AI usage per month included
  • DOCX, EPUB, HTML export
Start free, upgrade later
Most popular

Studio

For authors who work with an editor or a team.

$63 / month

Billed $758 a year

  • 10 books, 5 members
  • Real-time co-authoring, reviewer links, approvals
  • Print-ready PDF with KDP/IngramSpark presets
  • Launch kit and repurposing
  • $100 of AI usage per month included
Start free, upgrade later

Publisher

For imprints, ghostwriting firms and book coaches.

$159 / month

Billed $1,910 a year

  • 50 books, 25 members
  • Series bible across a catalogue
  • Private / local model option
  • $300 of AI usage per month included
  • Priority support
Start free, upgrade later

Billing is running on the development adapter — no card is charged and plans activate instantly for testing.

All paid plans start with a 14-day trial. AI usage beyond the monthly allowance pauses generation until you upgrade; you are never billed for overage automatically.

Every claim traceable

Each factual sentence links to the passage that supports it. Nothing is called “verified” without evidence you can open.

You stay the author

The AI drafts only into suggestions you accept, reject or revise. Locks, provenance and undo on every change.

Honest about cost

A cost estimate before every operation, a cap on every job, and a monthly allowance in each plan.