Clearbrief
Clearbrief is an AI writing tool for lawyers that checks and cites the evidence behind legal briefs.
Spellbook
Spellbook is an AI contract review and drafting tool for transactional lawyers that works inside Microsoft Word.
Clearbrief vs Spellbook
At a Glance
| Detail | Clearbrief | Spellbook |
|---|---|---|
| Category | GenAI & Drafting | GenAI & Drafting |
| Total raised | $4M | $81.5M |
| Rounds tracked | 2 | 4 |
| Latest round | Seed, $4M · Jun 2024 | Series B, $50M · Oct 2025 |
| Last valuation | Not disclosed | $350M |
| Lead investors | Authentic Ventures, How Women Invest, Reign Ventures | Khosla Ventures, Inovia Capital, Moxxie Ventures |
| Built for | Not disclosed | Mid-size firms, Boutiques |
| Headquarters | US | Canada |
Funding, Side by Side
Clearbrief rounds
- Jun 2024Seed$4M
- Aug 2021SeedUndisclosed
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, Clearbrief or Spellbook?
- Spellbook has raised $81.5M in disclosed funding, compared with $4M for Clearbrief.
- Do Clearbrief and Spellbook share investors?
- No. None of the investors we track have backed both companies.
- What is Clearbrief best for?
- Clearbrief is an AI writing tool for lawyers that checks and cites the evidence behind legal briefs.
- 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 12, 2026.