SirionLabs vs Summize
At a Glance
| Detail | SirionLabs | Summize |
|---|---|---|
| Category | CLM | CLM |
| Total raised | $166M | $57M |
| Rounds tracked | 4 | 3 |
| Latest round | Series D extension, $25M · Jan 2023 | Undisclosed, $50M · Jan 2026 |
| Last valuation | Not disclosed | Not disclosed |
| Lead investors | Brookfield Growth, Partners Group, Tiger Global Management, Avatar Growth Capital | Maven Capital Partners, YFM Equity Partners, NPIF - Maven Equity Finance |
| Built for | Not disclosed | Not disclosed |
| Headquarters | United States | United Kingdom |
Funding, Side by Side
SirionLabs rounds
- Jan 2023Series D extension$25M
- May 2022Series D$85M
- May 2020Series C$44M
- Jul 2016Series B$12.3M
Summize rounds
- Jan 2026Undisclosed$50M
- Oct 2022Series A$5.7M
- Dec 2020Undisclosed$1.3M
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, SirionLabs or Summize?
- SirionLabs has raised $166M in disclosed funding, compared with $57M for Summize.
- Do SirionLabs and Summize share investors?
- No. None of the investors we track have backed both companies.
- What is SirionLabs best for?
- AI contract lifecycle management.
- What is Summize best for?
- AI contract lifecycle management that works inside Teams, Slack and Word.
Source: Legal Tech Circle funding data, from public announcements. Updated November 11, 2026.