The standard for legal research — now built for what's next
Westlaw brings together trusted legal content, editorial expertise, and artificial intelligence — helping you move faster from question to answer, and from research to strategy
Redefining the limits of legal research
Westlaw continues to evolve — helping legal professionals work faster, search more intelligently, and research with greater confidence.
Westlaw AI capabilities are built around the way legal professionals work — from finding and validating authority to analyzing issues, comparing jurisdictions, reviewing litigation documents, and developing legal strategy.
AI-powered answers and insights are most valuable when they can be verified. Westlaw keeps users connected to trusted legal authority so they can review sources, validate findings, and apply professional judgment with confidence.
Westlaw helps legal professionals do more than find information. It helps turn research into insight, insight into action, and action into stronger legal outcomes.
Decades of innovation; one trusted research foundation
Find the right solution for how you work
Each Westlaw product is built on the same trusted foundation, with the level of AI that best fits the way you practice.
Agentic AI legal research
Westlaw Advantage
Move from legal research to deeper analysis and strategy with agentic AI grounded in trusted Westlaw authority.
For legal teams handling complex matters, high-stakes litigation, multistep research, and strategy-intensive workflows.
- Deep Research — agentic AI that runs your full research workflow, start to finish
- Litigation Document Analyzer — surfaces mischaracterizations in opposing filings
- Claims Explorer — identify causes of action from a fact pattern, faster
AI-enhanced legal research
Westlaw Edge with AI-Assisted Research
Get faster answers to legal research questions while staying connected to trusted legal authority.
For legal professionals and teams ready to accelerate research with AI-assisted answers grounded in Westlaw content.
- AI-Assisted Research — synthesized answers with full citations
- AI Jurisdictional Surveys across all 50 states
- Quick Check — Review briefs and memos to uncover relevant authority and strengthen analysis
Advanced legal research and analytics
Westlaw Edge
Research more efficiently, validate authority, and gain deeper legal insights with advanced research intelligence.
For legal professionals and teams that want powerful research tools, trusted authority, and analytics in a familiar Westlaw workflow.
- Litigation Analytics — Surface data-driven insights on judges, courts, attorneys, law firms, and case types.
- KeyCite Overruling Risk — Flag cases that may rely on law that has been implicitly undermined.
- Quick Check — Review briefs and memos to uncover relevant authority and strengthen analysis.
Extend Westlaw across your legal workflow
CoCounsel Legal is the only legal AI that reasons from authoritative Westlaw primary law, trusted Practical Law guidance, and your organization’s own knowledge. Describe what you need in plain language, and CoCounsel Legal develops the right legal approach, works through each step, and delivers polished work product with citations.
Learn more about CoCounsel LegalPractical Law helps legal professionals move from legal insight to practical execution with maintained how-to guides, templates, checklists, standard documents, clauses, and resources developed by expert attorney-editors.
Learn more about Practical LawAutomate essential legal tasks like document analysis, review, and drafting with an advanced AI tool built to boost productivity, accuracy, and confidence. CoCounsel Essentials enables you to deliver faster, more thorough work so you can focus on higher-level strategy and client relationships.
Learn more about CoCounsel EssentialsThe legal profession’s most trusted legal research platform
Frequently asked questions
Ready to take the next step?
Whether you need advanced legal research, AI-assisted answers, or deeper strategic analysis, Westlaw gives you trusted tools for the way legal work is changing.
Compare Westlaw plans
Explore Westlaw Edge, Westlaw Edge with AI-Assisted Research, Westlaw Advantage, and additional plan options.
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Not sure which Westlaw product is right for your team? Connect with a Thomson Reuters representative for guidance.
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