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LexCheck

LLM-powered contract review that runs inside MS Word, with LexCheck Copilot marking up agreements against your playbook.

3.8 Legal AI
3.8 Good 3.8
Runs where contracts are actually negotiated rather than in a separate portal No public pricing – demo-led sales
Reviewed by Challenging Voice Editorial · Updated Sep 2026 How we rate
PricingContact for Pricing
Free planNo
CompanyLexCheck
PlatformsWeb, Windows
CategoryLegal AI
Visits5
Last reviewedAug 2026
UpdatedSep 2026
Ask AI about LexCheck ChatGPT Claude Perplexity

Overview

LexCheck is contract review software built on large language models, and its most practical decision is where it runs: inside Microsoft Word, which is where contracts are actually negotiated.

That placement matters more than it sounds. Legal tech routinely fails on adoption because it asks lawyers to leave the document, upload it somewhere, and work in an unfamiliar interface under time pressure. LexCheck Copilot reviews and marks up the agreement in place, removing the manual pass through a redline. Case studies and an insights library sit alongside the product.

The obvious caution applies with force here: AI markup accelerates review, it does not carry professional responsibility. A lawyer still owns what gets signed, and the value is in catching the routine deviations quickly so attention goes to the genuinely negotiated terms. Access runs through a demo, with free access offered as an entry point.

Key features

  • LLM-powered contract review
  • LexCheck Copilot running inside Microsoft Word
  • Automated markup against negotiation standards
  • Removes the manual redline pass
  • Case studies and legal-tech insights library
  • Free access entry point before a paid engagement

Screenshots & demo

LexCheck screenshot 1

Pricing

LexCheck uses custom pricing. Contact their team for a quote based on your needs.

  • Pricing modelContact for Pricing
  • Starting priceCustom
  • Free planNo
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Pricing is provided as a guide. Check the official site for the latest plans.

Pros & cons

Pros

  • Runs where contracts are actually negotiated rather than in a separate portal
  • In-place markup avoids the upload-and-switch friction that kills legal tech adoption
  • Frees attention for genuinely negotiated terms rather than routine deviations

Cons

  • No public pricing – demo-led sales
  • A lawyer still owns the final review; this does not carry professional responsibility
  • Word-centred, so less useful for teams working in other document systems

How it compares

ToolRatingFreeFromBest known for
LexCheck (this tool)3.8No—LLM-powered contract review
Mixus4.0No—Agents that operate inside email and Microsoft Word
Dioptra3.7No—AI redlining driven by your own playbooks
Spellbook4.2No—Drafts contract language and flags risky clauses directly inside Microsoft Word

Alternatives to LexCheck

4 tools matched to LexCheck on what they do, their category and their price.

Mixus

4.0

Email-based legal agents that draft and redline in Word, with attorney approval built in.

Contact for Pricing Legal AI

Dioptra

3.7

AI contract redlining that works from your own playbooks and previously executed contracts, rather than generic legal templates.

Contact for Pricing Legal AI

Frequently asked questions

What is LexCheck?
LexCheck is contract review software built on large language models, and its most practical decision is where it runs: inside Microsoft Word, which is where contracts are actually negotiated.
Is LexCheck free?
LexCheck does not offer a free plan.
What are the best LexCheck alternatives?
The closest matches in the directory are Mixus, Dioptra, and Spellbook, compared side by side above.

Reviews

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