WESTLAW LEGAL RESEARCH
AI-powered legal research, grounded in trusted content — not internet guesswork
From industry-leading content to groundbreaking agentic legal AI, there's a solution that will meet your needs and your budget
50,000+
law firms and legal departments rely on Westlaw's trusted, authoritative content
6,000+
state government agencies — including courts in 94% of U.S. states — trust Westlaw
Deeper, smarter legal research with Westlaw Advantage
Leverage agentic AI to quickly explore every aspect of your legal question — just like an expert legal researcher would.
Starting at $288.60/month
Expert AI-powered research
Execute complex legal research with custom-trained agentic AI grounded in Westlaw’s legal content — it's like having a seasoned legal researcher at your side.
Deeper legal insights
Analyze your legal documents and pleadings to uncover potential misrepresentations of the law and possible counterarguments to opposing counsel.
Simplified claims research
Leverage AI to find the strongest claims for your matter and avoid missing those that are relevant to your case.
How much AI does your research need right now?
Westlaw Advantage
Westlaw's advanced AI explores every angle of your legal question, drawing only from Westlaw's trusted content. It shows each step and links to the cited authorities, so you can verify any answer in a click and spend more time on the work that matters most.
Starting at
$288.60/month
CoCounsel Legal
The only Legal AI that reasons from your organization's own knowledge, Practical Law guidance, and Westlaw authority. Take on the research, the first draft, and the document review together — then spend the hours you get back on the work clients actually pay for.
25% increase in matter capacity without adding headcount*
Starting at
$551.85/month
*Forrester Total Economic Impact(TM) study commissioned by Thomson Reuters, 2026
Compare plans and features | Westlaw Advantage | CoCounsel Legal |
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"
It’s like a legal research assistant on steroids.
Diane Haar
Founder, Attorney at Law
Hawaii Disability Legal Services, LLLC
The legal industry's trusted and award-winning legal research provider
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