Contract Management Software
Sirion review
Enterprise contract lifecycle management platform with strong post-signature obligation tracking and an AI layer called AskSirion.
Sirion at a glance
- Category
- Contract Management Software
- Starting price
- Contact sales
- Pricing model
- custom
- Public pricing
- No
- Free plan
- No
- Free trial
- No
- G2 rating
- 4.5 (65 reviews)
- Founded
- 2012
- Headquarters
- Lehi, Utah, US
- Employees
- 501-1,000 (ZoomInfo / Wiza band); other estimates up to about 1,160
- Funding or owner
- $85M Series D (May 2022, Partners Group); majority investment by Haveli Investments (Jan 2026)
- Security
- ISO 27001:2022
Who Sirion is for
Choose Sirion if
- Large enterprises with complex, high-volume contract portfolios.
- Teams that need multi-language contract analytics (100+ languages)
Look elsewhere if
- Small and mid-size teams (enterprise tier, quote only)
- Buyers who need a fast rollout; third parties report long implementations.
Sirion pricing
Sirion does not publish a price list; pricing is quoted on request.
G2 lists entry price as 'Contact Us' on an Enterprise tier. Spellbook (competitor, spellbook.com/learn/sirion-pricing) advises getting per-seat quote and renewal cap in writing.
What Sirion really costs
- Billing
- Quote.
Sirion features by buying criteria
| Criterion | What we found |
|---|---|
| Repository and search | Cloud repository handling millions of contracts across 100+ languages (Wikipedia summary) |
| Drafting and redlining | Drafting and negotiation supported per Wikipedia summary. |
| AI term extraction | Natural-language interaction and portfolio analysis; acquired Eigen Technologies in June 2024. |
| Pricing | Quote only, enterprise. |
What reviewers say about Sirion
Praised for
- AI features such as AskSirion.
- Reporting.
Common complaints
- Steep learning curve.
- Complex configuration.
- Perceived premium price.
Themes paraphrased from public reviews on G2 and similar sites, not quotes.
What most Sirion reviews leave out
- Sirion's AI base came partly from the June 2024 acquisition of Eigen Technologies.
- Haveli Investments took a majority stake in early 2026, a change of ownership relevant for contract renewals.
- Gartner Peer Insights shows 4.9 from 261 ratings for the Agentic CLM platform, but the page mixes snapshots.
- Third-party Spellbook claims implementations can exceed six months; competitor source, treat with caution.
- Sirion's compliance page references ISO 27001:2022; SOC 2 Type II is described but not clearly confirmed in what we could read.
- G2 product page shows 4.5 and comparison page 4.6, both from 65 reviews.
Sirion alternatives
IroncladMid-market and enterprise legal teams that want workflow-driven contracting.Contact sales
AgiloftLegal and procurement teams that need heavily customized contract workflows.Contact sales
LinkSquaresLegal teams that want AI to pull terms and dates out of existing contract archives.Contact sales
Docusign CLMLarger legal and sales-ops teams already on Docusign eSignature.Contact sales
JuroScale-ups where sales and HR need self-serve contracts from legal-approved templates.Contact sales
AlineSmall legal or sales teams (under 100 full users) that want e-signature and AI review in one price.$200 per full user per month (Team)
Sources
Every fact on this page comes from Sirion's own pricing, product or documentation pages, G2 and company records, checked on October 24, 2026. Unknown values are left out instead of estimated.