Manifest OS
AI software and back office for affiliated law firms.
Spellbook
Spellbook is an AI contract review and drafting tool for transactional lawyers that works inside Microsoft Word.
Manifest OS vs Spellbook
At a Glance
| Detail | Manifest OS | Spellbook |
|---|---|---|
| Category | GenAI & Drafting | GenAI & Drafting |
| Total raised | $60M | $81.5M |
| Rounds tracked | 1 | 4 |
| Latest round | Series A, $60M · Apr 2026 | Series B, $50M · Oct 2025 |
| Last valuation | $750M | $350M |
| Lead investors | Not disclosed | Khosla Ventures, Inovia Capital, Moxxie Ventures |
| Built for | Not disclosed | Mid-size firms, Boutiques |
| Headquarters | US | Canada |
Funding, Side by Side
Manifest OS rounds
- Apr 2026Series A$60M
Spellbook rounds
- Oct 2025Series B$50M
- Jan 2024Series A$20M
- May 2023Undisclosed$10.9M
- Dec 2019Pre-Seed$567K
Our Take
We have not tested these two head to head yet. The numbers above come from public funding announcements. If you use either one, tell us what you found and it may become a Field Note.
Quick Answers
- Which has raised more, Manifest OS or Spellbook?
- Spellbook has raised $81.5M in disclosed funding, compared with $60M for Manifest OS.
- Do Manifest OS and Spellbook share investors?
- No. None of the investors we track have backed both companies.
- What is Manifest OS best for?
- AI software and back office for affiliated law firms.
- What is Spellbook best for?
- Spellbook is an AI contract review and drafting tool for transactional lawyers that works inside Microsoft Word.
Source: Legal Tech Circle funding data, from public announcements. Updated November 11, 2026.