Dioptra vs LexCheck (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Not comparable
Not comparable: Dioptra does not list a price
Free plan
Tie
Neither has one
Higher rating
LexCheck
3.7 against 3.8
Same job?
Yes
Both are Legal AI tools

Side by side

Compared on	Dioptra	LexCheck
Our rating	3.7	3.8Better
Starts at	Not listed	Not listed
Free plan	No	No
Category	Legal AI	Legal AI
Plans	See pricing	See pricing
Key features	AI redlining driven by your own playbooks Learns from previously executed contracts Marks up against your accepted positions, not generic standards Published pricing and self-serve signup Demo path for evaluation	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
Pros	Redlining against your executed contracts beats generic template comparison Playbook-driven, so it encodes positions your team already holds Pricing and signup published rather than sales-gated	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	Recently acquired by Icertis - ask about roadmap and integration before a long commitment Requires a body of executed contracts and playbooks to work well Redlines inform a lawyer's judgement, they do not replace it	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
Company	Dioptra (Icertis)	LexCheck

Prices come from each vendor's pricing page, last checked 20260901. Check the vendor before you buy.

FAQ

Questions people ask

Is Dioptra better than LexCheck?

In our reviews Dioptra scores 3.7 and LexCheck scores 3.8. The better pick depends on the job. Dioptra: AI contract redlining that works from your own playbooks and previously executed contracts, rather than generic legal templates. LexCheck: AI contract review that marks up agreements against your playbook inside Microsoft Word.

Which is cheaper, Dioptra or LexCheck?

Dioptra: see pricing. LexCheck: see pricing.

Do Dioptra and LexCheck have free plans?

Neither lists a free plan.

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