Sirion review (2026): features, pros and cons, and what to check before you buy
Enterprise contract lifecycle management platform with strong post-signature obligation tracking and an AI layer called AskSirion.
Our take for buyers
Sirion is an enterprise contract lifecycle management platform with strong post-signature obligation tracking and an AI layer called AskSirion. It suits large enterprises with complex, high-volume contract portfolios, and it supports analysis across 100+ languages. There is no free plan or trial. G2 rates it 4.5 from 65 reviews, and reviewers like the AI features and reporting.
Shortlist it if obligation management after signature is your main pain. Skip it for small teams or fast rollouts: reviewers cite a steep learning curve and complex configuration, and third parties report long implementations. The January 2026 majority investment by Haveli Investments is a change of ownership to raise during contract talks.
Pros
- AI features such as AskSirion.
- Reporting.
Cons
- Steep learning curve.
- Complex configuration.
- Perceived premium price.
- Best for
- Large enterprises with complex, high-volume contract portfolios.
- Starting price
- Contact sales
- G2 rating
- 4.5 (65 reviews)
What is Sirion?
Enterprise contract lifecycle management platform with strong post-signature obligation tracking and an AI layer called AskSirion. Large enterprises tracking post-signature obligations across huge, multilingual portfolios (100+ languages) are the target, with the AskSirion AI layer on top. Pricing is quote only. Expect a long rollout and complex configuration, as reviewers report. Sirion was founded in 2012 and is based in Lehi, Utah, US.
Category: Contract Management Software
Sirion key features
| 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. |
Sirion plans and 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.
Who should shortlist Sirion
A strong fit for
- Large enterprises with complex, high-volume contract portfolios.
- Teams that need multi-language contract analytics (100+ languages)
A weak fit for
- Small and mid-size teams (enterprise tier, quote only)
- Buyers who need a fast rollout; third parties report long implementations.
Sirion alternatives
IroncladMid-market and enterprise legal teams that want workflow-driven contracting.
AgiloftLegal and procurement teams that need heavily customized contract workflows.
LinkSquaresLegal teams that want AI to pull terms and dates out of existing contract archives.
Docusign CLMLarger legal and sales-ops teams already on Docusign eSignature.
JuroScale-ups where sales and HR need self-serve contracts from legal-approved templates.
AlineSmall legal or sales teams (under 100 full users) that want e-signature and AI review in one price.
Security, admin and compliance
Sirion lists ISO 27001:2022. SOC 2 Type II is described by the vendor, but a clear confirmation is not published. SSO, SCIM, audit logs, data residency and a DPA are not published, and contract terms are not either, so all of these need written answers. The vendor's AI base came partly from the June 2024 Eigen Technologies acquisition, so ask where model processing happens and how customer contract data is used. Get the renewal cap and the ownership change implications in the contract.
- Certifications
- ISO 27001:2022.
Contract and buying terms
- Starting price
- Contact sales.
- Pricing model
- Custom.
- Free plan or trial
- No.
What to test in a Sirion demo or trial
Ask for a demo built on your own contracts, not a sample set. Test how well AskSirion answers questions about obligations, renewal dates and clauses, and whether results can be traced to the source text. Try a non-English contract if you have them, given the 100+ language claim. Have an admin attempt a workflow change, since reviewers report complex configuration and a steep learning curve. Ask for a realistic implementation timeline with named services, because third parties report long rollouts.
Questions to ask Sirion before you sign
These are the points Sirion's public pages leave open. Get the answers in writing before procurement signs off.
- Which plan includes SAML SSO, and what does it cost for our seat count?
- Is SCIM provisioning included, or a paid add-on?
- Which plan includes audit logs, and how long are they kept?
- Where is our data stored, and can we choose the region?
- Can we sign your standard DPA without changes?
- Is there a monthly option, and what are the cancellation and renewal terms?
- What will the price be at renewal, and is the increase capped?
Things to know before a demo
- 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 FAQ
What is Sirion used for?
Large enterprises tracking post-signature obligations across huge, multilingual portfolios (100+ languages) are the target, with the AskSirion AI layer on top. Pricing is quote only. Expect a long rollout and complex configuration, as reviewers report. It suits large enterprises with complex, high-volume contract portfolios.
What security certifications does Sirion list?
Sirion lists ISO 27001:2022. SOC 2 Type II is described by the vendor, but a clear confirmation is not published, so ask for the report.
Who is Sirion best for?
Large enterprises with complex, high-volume contract portfolios, especially those needing post-signature obligation tracking or multi-language analytics. It is not aimed at small and mid-size teams.
How long does a Sirion implementation take?
Sirion does not publish a timeline. Third parties report long implementations, with a competitor claiming more than six months, so treat that as a claim to test and ask for a written plan.
Vendor profile
- 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)
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.