What is Lexis+ AI?
Lexis+ AI is the generative AI layer on top of LexisNexis — the world's largest legal database with 150+ years of legal content. It lets lawyers ask natural language questions and get cited answers drawn from case law, statutes, regulations and secondary sources in seconds.
Unlike general AI tools that can hallucinate legal citations, Lexis+ AI only cites sources that actually exist in the LexisNexis database — every answer is grounded in verified legal content. It also drafts documents, summarises cases and compares legal standards across jurisdictions.
For lawyers already subscribed to LexisNexis, Lexis+ AI is the natural way to add AI to their research workflow without switching platforms or risking hallucinated citations.
Key Features
AI Legal Research
Ask legal questions in plain English — get cited answers drawn from 150+ years of LexisNexis legal content, instantly.
Verified Citations
Every citation links to a real, verified source in the LexisNexis database — no hallucinated cases or statutes.
Document Drafting
Drafts legal documents, memos and briefs using research results — with citations auto-inserted.
Case Summarisation
Summarises lengthy cases and judgments in seconds — extract key holdings, facts and reasoning instantly.
Multi-Jurisdiction
Searches across federal and state law, international jurisdictions and regulatory databases simultaneously.
Shepard's Integration
Integrated with Shepard's Citations — check whether cases are still good law as you research.
Pros & Cons
What we love
Grounded in world's largest legal database
No hallucinated citations — all verified
Natural language research queries
Deep integration with Shepard's
Trusted brand with 50+ year track record
Watch out for
Expensive — enterprise pricing
Requires existing LexisNexis subscription
Less useful if you use Westlaw
Frequently Asked Questions
Lexis+ AI and Westlaw Precision are the two leading AI legal research platforms — both are excellent and the right choice depends largely on which platform your firm already subscribes to. Lexis+ AI has a larger overall database; Westlaw Precision has KeyCite for citation checking. Most lawyers stick with their existing platform rather than switching for AI features alone.
No — Lexis+ AI is grounded in the LexisNexis database, meaning every citation it provides links to a real, verifiable source. This is its key advantage over general AI tools like ChatGPT, which can confidently cite cases that don't exist. Always verify citations before filing, but Lexis+ AI's grounded approach significantly reduces hallucination risk.
Lexis+ AI pricing is not publicly listed — it is sold as part of LexisNexis subscription packages and priced based on firm size and usage. Contact LexisNexis directly for current pricing. Most law firms access it as an add-on to their existing LexisNexis research subscription.
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