Buyer’s guide
Best AI contract review software
in 2026
Seventeen products checked against two questions most comparisons skip: does it keep your contracts, and does anyone independently audit its security? Below is what we found, including the cases where a competitor is the better buy.
Who wrote this
Clment did — we make one of the tools listed. We have tried to write the guide we wanted when we were researching this market: every competitor claim below was checked on that vendor’s own website, anything we could not verify is marked as reported, and there is a section on when not to choose us. Judge it on whether it is useful, not on who published it.
Prices and certifications last verified 24 August 2026. This market moves; re-check before you buy.
The comparison
Entry price for a paid plan. “Keeps your contracts” means a durable, retrievable record rather than a one-off review. “Portfolio questions” means asking a question across everything you have signed, not just the document in front of you.
| Tool | From | Best for | Keeps your contracts | Portfolio questions | Security certification |
|---|---|---|---|---|---|
| Lexplio Consumer-first. Advertises that documents are never stored — which is a feature if you want a one-off answer, and a problem if you ever need the contract again. | From $12/mo | Understanding one contract, cheaply | No | No | None published |
| SignSmart Document history is a saved list rather than a searchable repository. | From $29.95/mo | Plain-English breakdowns for renters and freelancers | Saved list | No | None published |
| goHeather goHeather drafts new contracts from a questionnaire with lawyer-written templates — a different job from ours, not a better version of it. Clment starts when a contract arrives from the other side. Their templates are tailored to Canadian jurisdictions, so the drafting is narrower than it looks if you are signing elsewhere, and the entry plan is $200/month for one seat. | From $200/mo | Drafting new contracts as well as reviewing them | Yes | Partial | Cloud provider only |
| Clment Ours Ours. The rulebook adapts to the contract’s governing law rather than assuming one country’s norms, and every risk is quoted to the clause it came from. Contracts then stay — key dates watched, portfolio-wide questions answered, MCP server and REST API on paid plans. We review contracts; we do not draft them. | Free, then $149/mo | Non-lawyers who want review tuned to their own jurisdiction | Yes | Yes | SOC 2 Type II |
| Superlegal Certification claim appears only on their due-diligence page. Core product is single-contract review. | From $999/mo | Volume review with attorney verification | Yes | No | SOC 2 Type II |
| Ivo Strong portfolio querying. Reported at roughly $6,000 per user per year — they do not publish pricing, so treat that figure as secondhand. | Not published | In-house legal teams at scale | Yes | Yes | SOC 2 Type II + ISO 27001 |
| Luminance The established choice for large enterprises with big contract estates, and priced accordingly. No published pricing at all, so you cannot size it without a sales call. | Not published | Enterprise legal, large contract estates | Yes | Yes | ISO 27001:2022 + SOC 2 Type 2 |
Two products commonly listed in this category were excluded because we could not verify them: one had gone offline entirely (a deleted deployment and an expired certificate), and another shipped a privacy policy still containing an unfilled address placeholder. A third, Screens, no longer exists as an independent product — it was acquired and is now sold as part of Agiloft.
Five questions worth asking any vendor
These are the questions that actually separate these products. They work whichever tool you end up choosing.
Does it keep the contract?
The sharpest dividing line in this market. Most tools under $200/month review a document and forget it — some advertise that as a privacy feature. That is fine for a one-off. It is not fine when the renewal you did not notice arrives eighteen months later and there is no record you ever looked.
Can it answer questions across everything you have signed?
"Which of my contracts auto-renew before March?" is a different capability from reviewing one document, and it is the line that separates the cheap tier from the funded one. Nothing we checked under $200/month can do it; several tools costing thousands can.
Does the review end in something you can send?
A list of risks is homework. A tracked-changes Word document is a reply. Ask whether the output is a report or a redline you can return to the other side.
Whose security certification is it?
Read this wording carefully. "Built on certified cloud platforms" describes Amazon or Google, not the vendor. An independent audit of the vendor’s own controls — SOC 2 Type II or ISO 27001 — is a different claim. Several tools in this category publish neither.
Where does your contract actually go?
Ask whether your documents train anyone’s model, where they are stored, and whether you can get them out. If a vendor cannot answer plainly on its own website, that is your answer.
Being straight with you
When not to choose Clment
We would rather you bought the right thing than bought ours. Five cases where something else is the better answer:
You want one contract explained, once
If you have a single lease or offer letter and no intention of keeping a record, a $12 tool will answer your question. Paying for a repository you will not use is waste. Lexplio or SignSmart are honest choices here.
You need to write contracts, not just check them
Clment reviews contracts you have been handed. It does not draft them from scratch. If what you actually need is to produce your own agreements, goHeather generates them from a questionnaire with lawyer-written templates, and Rocket Lawyer has a large template library. Come to us for the ones arriving from the other side.
You live inside Microsoft Word
Clment produces a tracked-changes Word document and round-trips through OneDrive or Google Docs, but the review itself happens in the browser. That is a real trade-off rather than a matter of taste: a structured pass ends in a readable report you can circulate and file, which editing inline in the original cannot produce. If staying in the ribbon matters more to your reviewers than having that artifact, goHeather or LegalOn fit better.
You need a lawyer to sign off, not software
Some decisions need professional advice with liability attached. Superlegal and Crosby pair AI review with actual attorneys. Clment tells you what a contract says and what we would change — it is not a law firm and does not give legal advice.
You are an enterprise legal team with thousands of agreements
At that scale the questions become procurement integrations, matter management and bespoke workflow. Ivo, Luminance and the established CLM vendors are built for it. If that is you, our sister product Contract Eagle is the better conversation.
Your contracts are not in English
Clment reviews English-language contracts. Several European vendors handle multilingual estates properly; we do not, yet.
Where Clment fits
There is a gap in this market and it is the reason Clment exists. The tools a small business can afford treat a contract as a question to be answered and thrown away. The tools that keep your contracts, watch the dates and answer questions across the whole portfolio are sold to in-house legal teams at thousands per seat per year.
Clment does the second thing at the first price. Every risk quoted to the exact clause, every fix drafted into a Word document you can send back, and then the contract stays — dates watched, reminders sent, decisions recorded, and answerable in plain English months later. It is independently audited to SOC 2 Type II, and your contracts are never used to train a model.
The part we care most about is that the review knows where you are. Rather than judging every contract against one country’s norms, Clment applies a rulebook matched to the contract’s governing law — so a contract governed by California law is not marked against English assumptions, and vice versa. That matters most to the people least equipped to catch the difference: everyone reviewing their own contracts without a lawyer.
Clment is contract review software, not a law firm, and nothing here is legal advice. Vendor details were taken from each company’s public website on 24 August 2026 and may have changed since. If we have got something wrong about your product, tell us and we will correct it.