Crosby
Crosby operates an AI-assisted legal service in which software agents and lawyers review, redline, and negotiate commercial contracts through email, Slack, and CLM workflows.
Crosby vs SirionLabs
At a Glance
| Detail | Crosby | SirionLabs |
|---|---|---|
| Category | CLM | CLM |
| Total raised | $85.8M | $166M |
| Rounds tracked | 3 | 4 |
| Latest round | Series B, $60M · Mar 2026 | Series D extension, $25M · Jan 2023 |
| Last valuation | Not disclosed | Not disclosed |
| Lead investors | Lux Capital, Index Ventures, Sequoia Capital, Bain Capital Ventures | Brookfield Growth, Partners Group, Tiger Global Management, Avatar Growth Capital |
| Built for | Not disclosed | Not disclosed |
| Headquarters | United States | United States |
Funding, Side by Side
Crosby rounds
- Mar 2026Series B$60M
- Oct 2025Series A$20M
- Jun 2025Seed$5.8M
SirionLabs rounds
- Jan 2023Series D extension$25M
- May 2022Series D$85M
- May 2020Series C$44M
- Jul 2016Series B$12.3M
Backed by both: Sequoia Capital.
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, Crosby or SirionLabs?
- SirionLabs has raised $166M in disclosed funding, compared with $85.8M for Crosby.
- Do Crosby and SirionLabs share investors?
- Yes. Sequoia Capital backed both.
- What is Crosby best for?
- Crosby operates an AI-assisted legal service in which software agents and lawyers review, redline, and negotiate commercial contracts through email, Slack, and CLM workflows.
- What is SirionLabs best for?
- AI contract lifecycle management.
Source: Legal Tech Circle funding data, from public announcements. Updated November 11, 2026.