8 Best AI Contract Review Software in 2026, Compared

Quick comparison

The best ai contract review software

#1

Spellbook

Best for: Transactional lawyers at small and mid-size firms who draft and review entirely in Microsoft Word

★★★★★★★★★★4.7/5 on G2 (29 reviews, checked Nov 2026)

Visit spellbook.com

Starting priceCustom quote (no published price; 7-day free trial)

Free planNo — 7-day free trial

Spellbook is a Microsoft Word add-in, so review happens where transactional lawyers already work: it drafts clauses, flags risky language, generates redlines and applies playbooks without leaving the document. It also benchmarks terms against market standards and answers questions about the contract, which makes it a strong first pass on NDAs, MSAs and vendor agreements.

The catch is price transparency. Spellbook publishes no price and quotes by team size, so budgeting starts with a demo and a sales call, and third-party reports of per-seat prices disagree widely. If your team lives in Word and wants the most mature in-document review, start with the 7-day free trial; if you need a number before you talk to sales, look at Gavel Exec or Genie AI instead.

What we like

• Native Word add-in that drafts clauses, flags risky language and generates redlines without leaving the document
• Applies your playbooks during live negotiation and benchmarks terms against market standards
• Answers questions about the contract and suggests clause alternatives with source references
• 7-day free trial with no published seat minimum, so a solo lawyer can try the real workflow

Watch out for

• No published price: quotes are set by team size, so budgeting starts with a demo and a sales call
• Third-party reports of its per-seat price disagree widely, from about $99 to about $500 a month
• Built entirely around Microsoft Word, so teams that review in a browser or a repository get less value

#2

Gavel Exec

Best for: Transactional attorneys who want a published per-user price and market benchmarking before they negotiate

Visit gavel.io

Starting price$160/user/month ($1,740/user/year billed annually)

Free planNo — 25 free queries per user, no credit card

Gavel Exec is the most transparent buy in this list: $160 per user per month, or $1,740 per user per year, with 25 free queries to start and no credit card required. It reviews and redlines inside Word and on the web, applies your playbooks, benchmarks terms against market data and returns priority-ranked redlines as tracked changes with the reasoning behind each one.

The trade-off is scope and scale. Exec is a review and drafting tool, not a full contract lifecycle platform, so repository, obligations and intake live elsewhere. Paid plans include 1,000 queries per user per month, and the per-user price adds up fast for a large team. For one to five reviewers who want a published price, it is the easiest quote to defend.

What we like

• Published price: $160 per user per month, or $1,740 per user per year, with team pricing from 10 seats
• Benchmarks each term against market data for your jurisdiction, industry and company size
• Returns priority-ranked redlines as tracked changes, with comments, missing-term lists and the reasoning behind each change
• SOC 2 Type II certified, with zero data retention agreements with AI providers

Watch out for

• Per-user pricing adds up fast: five reviewers cost $800 a month on monthly billing
• Scoped to review and drafting, not a full contract lifecycle platform, so repository and obligation tracking live elsewhere
• Paid plans cap usage at 1,000 queries per user per month, so heavy playbook runs can eat the allowance

#3

Genie AI

Best for: Small in-house legal teams and commercial managers who need playbook review without a sales call

Visit genieai.co

Starting price$75/month (Pro, billed monthly; $59/month billed annually)

Free planYes — free plan ($0, no time limit)

Genie AI is the cheapest self-serve route into AI contract review: a free plan with no time limit, then Pro at $75 a month, or $59 a month billed annually. It drafts, reviews, redlines and negotiates against your own playbook, rating each clause red, amber or green, and works in a Word-style editor with more than 500 templates across 150-plus jurisdictions.

The limits are usage-based rather than seat-based. Pro includes a set AI token allowance, so a team reviewing dozens of long contracts a month can outgrow it and move to Business at $320 a month for five users. The free plan locks exports, so treat it as a trial of the review quality. For a small team that wants to start today without a sales call, Genie AI is the obvious first try.

What we like

• Cheapest self-serve start here: free plan, then Pro at $75 a month or $59 a month billed annually
• Rates each clause red, amber or green against your own playbook, with tracked-changes redlines
• More than 500 contract templates across 150-plus jurisdictions, with drafting, review and negotiation in one workspace
• ISO/IEC 27001:2022 certified, with self-serve sign-up and no implementation project

Watch out for

• Pro is priced by AI token allowance, so reviewing dozens of long contracts a month can outgrow the plan
• Free plan locks document exports, so it works as a trial of review quality rather than a working tier
• No verified G2 rating with a usable review count, so buyer sentiment is harder to check

#4

goHeather

Best for: Founders, operations and finance managers who sign contracts but are not lawyers

Visit goheather.io

Starting price$400/month (Starter, 1 seat, billed monthly; $200/month billed annually)

Free planNo — 7-day free trial, no credit card

goHeather is written for the person who signs contracts but is not a lawyer: founders, finance managers and operations leads. It reviews contracts in plain English, flags risks, applies playbooks you build yourself and suggests one-click redlines in Word or its web editor, with a commercial lawyer helping you set up your playbooks in free one-to-one sessions.

The price is the honest problem: Starter costs $400 a month, or $200 a month billed annually, for a single seat, and a second seat moves you to a Team plan with a custom quote. There is no document limit and every feature is included, so heavy users get value, but occasional reviewers will find $400 a month hard to justify. Try the 7-day free trial before committing.

What we like

• Published price: Starter at $400 a month, or $200 a month billed annually, with every feature included
• Explains risks in plain English and suggests one-click redlines, built for non-lawyers
• Free one-to-one sessions with a commercial lawyer to help set up your playbooks
• No monthly document limit and no data used to train AI models

Watch out for

• $400 a month for one seat is steep for occasional use, and a second seat moves you to a custom-quoted Team plan
• Only two Trustpilot reviews exist, so there is almost no public buyer signal to check against
• Employment templates are Canada-focused, which limits value for teams hiring elsewhere

#5

Luminance

Best for: Large law firms and in-house teams reviewing high volumes of contracts and due-diligence sets

★★★★★★★★★★4.5/5 on G2 (35 reviews, checked Nov 2026)

Visit luminance.com

Starting priceCustom quote (no published price; demo only)

Free planNo — demo only, no free trial

Luminance is the enterprise pick for volume: it reads whole contract sets, flags clauses that break your standard positions, suggests redlines in Word and supports due diligence across large document collections in more than 80 languages. Its traffic-light markup shows at a glance which clauses comply, which need conditions and which deviate, so a lean team can clear routine agreements without waiting on outside counsel.

It is also the heaviest buy here. Luminance publishes no price, sells through a demo and quote, and implementation typically takes four to eight weeks with a real learning curve. Small teams and occasional reviewers should not start here. Choose Luminance when contract volume or a due-diligence deadline is the problem, and budget for setup time as well as the licence.

What we like

• Reads whole contract sets and flags clauses that break your standard positions, with suggested redlines in Word
• Traffic-light markup shows at a glance which clauses comply, which need conditions and which deviate
• Built for due diligence across large document collections in more than 80 languages
• ISO 27001 certified and SOC 2 Type II examined, with on-premises deployment available

Watch out for

• No published price and no free trial: evaluation runs through a demo and a custom quote
• Implementation typically takes four to eight weeks, with a real learning curve for new teams
• Enterprise pricing puts it out of reach for small teams and occasional reviewers

#6

Ironclad

Best for: Mid-size to large legal operations teams automating the full contract lifecycle with approvals

★★★★★★★★★★4.4/5 on G2 (312 reviews, checked Nov 2026)

Visit ironcladapp.com

Starting priceCustom quote (no published price; demo only)

Free planNo — demo only, no free trial

Ironclad is a full contract lifecycle platform, not just a reviewer: legal builds approval workflows, clause rules and templates once, then sales, procurement and HR self-serve contracts inside those guardrails. Its AI assist drafts, redlines and analyses clauses, and native e-signature means a contract never leaves the platform to get signed.

The cost is enterprise-sized. Ironclad publishes no price, and third-party buyer data puts typical annual contracts in the tens of thousands of dollars, with implementation fees on top and a rollout measured in weeks. That makes it a poor fit for a team that only needs review. Buy it when contract turnaround has become a company-wide bottleneck, not when you need a faster redline.

What we like

• Full lifecycle platform: drafting, approvals, negotiation, native e-signature and obligation tracking in one place
• No-code workflow designer lets legal set the rules once so business teams self-serve inside guardrails
• AI Assist drafts, redlines and analyses clauses, with contract analytics across the whole portfolio
• Named a Forrester Wave CLM Leader in 2025, with deep Salesforce and business-system integrations

Watch out for

• No published price: third-party buyer data puts typical annual contracts in the tens of thousands of dollars
• Implementation fees run into five figures on top of the licence, with a rollout measured in weeks
• Overkill for a team that only needs faster redlines rather than company-wide contract workflows

#7

Juro

Best for: Growing business teams that need self-serve contracts with AI review built into the workflow

★★★★★★★★★★4.5/5 on G2 (248 reviews, checked Nov 2026)

Visit juro.com

Starting priceCustom quote (no published price; demo only)

Free planNo — demo only, no free trial

Juro is a browser-native contract platform for business teams: contracts are created, negotiated and managed in one workspace, with AI review built into the workflow and unlimited users, workflows and templates on every plan. Pricing is based on how many contracts you process each month rather than on seats, which suits teams where many people touch contracts but only a few are lawyers.

The trade-offs are price opacity and annual billing. Juro publishes no prices, quotes by contract volume and integration complexity, and bills annually, so budgeting means a sales conversation and a written quote. Its Word integration is also less seamless than its in-platform editor. Pick Juro when your team wants self-serve contracts end to end, and trial the editor on your own templates first.

What we like

• Browser-native workspace for creating, negotiating, approving and managing contracts end to end
• Unlimited users, workflows and templates on every plan, with pricing by contract volume rather than seats
• AI review and playbooks built into the workflow, so business teams can self-serve standard agreements
• Rated highly by G2 reviewers for ease of setup and quality of support

Watch out for

• No published prices and annual-only billing, so budgeting means a sales conversation and a written quote
• Pricing is based on contract volume and integration complexity, which is hard to estimate before the call
• Word integration is less seamless than the in-platform editor, per G2 reviewers

#8

Lexion

Best for: Mid-market legal teams that want a searchable contract repository with AI extraction after signing

★★★★★★★★★★4.6/5 on G2 (135 reviews, checked Nov 2026)

Visit lexion.ai

Starting priceCustom quote (no published price; free trial available)

Free planNo — free trial available

Lexion is the repository-first pick: it stores signed contracts in one searchable place, extracts key terms and dates with AI, tracks obligations and renewals, and plugs into Word for review. DocuSign acquired Lexion in 2024 for $165 million and is folding its technology into its Intelligent Agreement Management platform, so existing customers keep support while new capability ships through DocuSign.

The uncertainty is the roadmap and the price. Lexion publishes no price, quotes are set by DocuSign, and the independent product roadmap is now tied to a larger platform. That matters if you want a standalone tool with its own release pace. Choose Lexion when your main pain is finding what you already signed and what it obliges you to do, rather than drafting the next contract.

What we like

• Searchable repository that extracts key terms, dates and obligations from signed contracts with AI
• AI Contract Assist reviews in Word, with clause comparison and obligation alerts ahead of renewals
• High G2 ratings for ease of use and ease of setup, with responsive support
• DocuSign backing after the 2024 acquisition, with e-signature integrations built in

Watch out for

• No published price: quotes are now set through DocuSign, so pricing depends on the DocuSign package
• Roadmap is tied to DocuSign Intelligent Agreement Management, so the standalone product has no independent release pace
• Reviewers note AI accuracy can need manual checking on unusual or non-standard contracts

The best AI contract review software reads a contract before you do: it flags risky clauses, suggests redlines against your playbook and summarises what matters, so the first pass takes minutes instead of hours. This list is sorted by fit for the most common buyer — a lawyer or a small legal team reviewing routine commercial contracts — not by brand size, and every price was checked on the vendor's own pricing page on November 10, 2026.

How to choose the best AI contract review software

Picking a reviewer is mostly about matching the tool to the contracts you actually sign. A firm that reviews NDAs all day needs something different from a legal team running due diligence on a thousand-document deal set, and a founder signing vendor agreements needs something different again. The six checks below work for every buyer in this list, whatever the budget.

1. Start with where you work. If you live in Microsoft Word, pick a Word add-in like Spellbook or Gavel Exec. If your team works in a browser, Juro or Genie AI fits better.
2. Check the price model first. Only three tools here publish a price. The other five are quote-only, so ask for a written quote before you compare anything else.
3. Ask how playbooks are built. The best tools let you build rules from your own signed contracts and checklists, not just from generic templates.
4. Test on your own paper. Run one NDA and one MSA from the other side through the trial, and check whether the redlines match what your lawyer would write.
5. Check the usage cap. Some tools cap queries, tokens or documents a month; a cap that looks generous can run out fast on long contracts.
6. Confirm who signs off. No tool here replaces a lawyer: the output is a first pass, and a licensed attorney should review anything material before signing.

A practical test that sorts the list fast is the messy-contract test: take the worst counterparty paper you received this year — scanned PDF, unusual governing law, one-sided liability — and run it through the two finalists. The tool that flags the liability cap and the missing termination right, and explains both in plain language, is the one your team will actually use. A tool that only summarises the document is a reader, not a reviewer, and it will not save your lawyer any time.

Before you send a reviewed contract out, check that the title and summary read well in search with the free SERP snippet preview tool — it shows exactly how a page title and description will look in Google.

AI contract review software pricing: what you will actually pay

Only three tools publish a price, so the worked example is short. One reviewer on Genie AI Pro pays $75 a month, or $59 a month billed annually — $708 a year. The same reviewer on Gavel Exec pays $160 a month, or $1,740 a year billed annually. On goHeather Starter, one seat costs $400 a month, or $200 a month billed annually — $2,400 a year.

Five reviewers change the picture. Five seats of Gavel Exec cost $800 a month on monthly billing, or $8,700 a year on annual billing. Five reviewers on Genie AI Business, the five-user plan, cost $320 a month, or $259 a month billed annually. For the five quote-only tools, there is no number to multiply: Spellbook, Luminance, Ironclad, Juro and Lexion all price by team size, volume or scope, so the only honest budget is the written quote. Ask every vendor the same four questions: what is included, what counts toward the cap, what implementation costs, and what the renewal increase is.

One more cost that rarely appears on a pricing page is the setup. A Word add-in can be running the same day you sign up, while an enterprise platform can take weeks of playbook building and training before the first contract is reviewed. That setup time is a real cost, especially for a small team, and it is worth asking the vendor to put it in writing: how many hours of your team's time the first month will take, and whether training and playbook building are included in the quote or billed separately.

Know the difference: AI review, CLM and e-signature

The biggest buyer confusion in this category is the overlap between three kinds of tool. AI contract review software does one job: it reads a single contract, checks it against your playbook and returns redlines. Spellbook and Gavel Exec are review-first tools, and that focus is why they are fast to start.

CLM software manages the whole lifecycle: intake, drafting, approvals, negotiation, e-signature, storage and obligation tracking. Ironclad and Juro are CLM platforms with AI review built in, and Lexion adds the repository and obligation side. E-signature alone, such as DocuSign, only signs a document — it does not review it. If your pain is the redline, buy review; if your pain is contracts getting stuck between teams, buy CLM; if you only need signatures, you do not need either. Teams that also manage signed documents should read our guide to document management software for law firms, and firms that want the full picture can start with our SEO audit service to see how their site presents to clients.

What good review output looks like

A good review is not a summary. It is a marked-up document you can send back. At minimum, expect tracked changes you can accept or reject one by one, a comment on each change that says why it was made, and a short list of missing terms — the clauses your playbook requires but the contract does not have. If a tool only returns a memo about the contract, your lawyer still has to do the redlining by hand, and the time saving evaporates.

Two details separate the strong tools from the weak ones. First, the redline should cite the source of the rule: your playbook, your precedent, or a market benchmark. A change with no reason attached is hard to defend in a negotiation. Second, the tool should keep your positions consistent across contracts: the same liability cap, the same governing law, the same payment terms, every time. That consistency is the real value of a playbook — it turns one lawyer's judgment into a standard the whole team can apply, including the commercial colleagues who review routine agreements without legal training.

Quick comparison: tool type by need

How we chose

We checked each vendor's own pricing page on November 10, 2026 and recorded the starting price exactly as shown, or recorded "Custom quote" where the vendor publishes no price. Ratings come from G2, checked the same day, and only where the G2 page showed a score and a review count in a fresh copy; Gavel Exec, Genie AI and goHeather show no rating because no verified G2 or Trustpilot score with a usable count was available. We ranked the tools by fit for the most common buyer — a lawyer or small legal team reviewing routine commercial contracts — not by brand size. No vendor paid for a place in this list, and none of the links here are affiliate links.

What to do next

Start with the decision path above: pick where you work, check the price model, and test the tool on your own NDA and MSA before you pay. If you want a published price, start with Gavel Exec or Genie AI; if you live in Word, start with Spellbook's free trial. Keep the quote in writing, with the cap, the implementation cost and the renewal terms spelled out, before you sign anything. Once your tools are in place, find out what's holding your rankings back.

Sources we checked (13)

• Spellbook pricing — spellbook.com/pricing (no published price; custom quote by team size, checked November 10, 2026)
• Spellbook on G2 — 4.7/5, 29 reviews (checked November 10, 2026)
• Gavel Exec — gavel.io/exec ($160/user/month or $1,740/user/year, checked November 10, 2026)
• Genie AI pricing — genieai.co/pricing (Pro $75/month, $59/month billed annually, checked November 10, 2026)
• goHeather pricing — goheather.io/pricing (Starter $400/month, $200/month billed annually, checked November 10, 2026)
• Luminance pricing — luminance.com (no published price; quote-based, checked November 10, 2026)
• Luminance on G2 — 4.5/5, 35 reviews (checked November 10, 2026)
• Ironclad pricing — ironcladapp.com (no published price; quote-based, checked November 10, 2026)
• Ironclad on G2 — 4.4/5, 312 reviews (checked November 10, 2026)
• Juro pricing — juro.com (no published price; quote-based, checked November 10, 2026)
• Juro on G2 — 4.5/5, 248 reviews (checked November 10, 2026)
• Lexion pricing — lexion.ai (no published price; quote-based, checked November 10, 2026)
• Lexion on G2 — 4.6/5, 135 reviews (checked November 10, 2026)