Research complex legal questions and deliver strategic advice with confidence
Respond quickly to business needs with AI-powered research, authoritative sources, and expert guidance that help you synthesize complex information and deliver clear, defensible recommendations
Legal teams rely on fast, accurate research to deliver strategic advice — incomplete sources and conflicting interpretations slow them down
Research with precision, find what matters
Disconnected research tools force you to search multiple platforms, wasting valuable time and increasing the risk of missing critical sources. Access comprehensive legal content in one place so you can move quickly from question to answer without switching systems.
Synthesize with clarity, build your position
Distilling multiple authorities, often with conflicting interpretations, into coherent, defensible advice is one of the most challenging aspects of legal work. Transform thorough research into clear insights stakeholders can understand and act on, backed by authoritative content.
Advise with authority, earn trust
Business stakeholders need more than legal analysis — they need confident recommendations they can rely on. Deliver well-supported advice with transparent citations that demonstrate thorough analysis and reduce organizational risk.
See the difference the right solution makes
60%
increase in the speed of researching legal questions and delivering strategic advice
85%
of users find more key information with advanced research and analysis tools, enabling better, faster decisions
*Thomson Reuters customer surveys and U.S. usage data on time savings, 2024
End-to-end legal research and advisory workflow
- Clarify
- Locate
- Analyze
- Deliver
Clarify the legal question
Clearly define the legal issue, scope, and jurisdiction to ensure research is focused and relevant.
What you can achieve by using CoCounsel Legal:
- Frame the legal question and identify the relevant jurisdiction.
- Determine the type of guidance required, such as regulatory interpretation, case law, and practical guidance.
- Define scope boundaries to focus research efforts efficiently.
- Surface key terms and concepts that will guide your research strategy.
Locate authoritative sources
Find applicable law and trusted guidance that can be relied upon for legal advice.
What you can achieve by using CoCounsel Legal:
- Access primary law, secondary sources, and expert guidance from Westlaw's comprehensive legal content directly within your research workflow.
- Ensure sources are current, authoritative, and relevant with real-time access to case law, statutes, and regulations.
- Leverage Practical Law's expert-maintained resources for jurisdiction-specific guidance and comparative analysis.
- Search across our trusted content and your own document repositories simultaneously, ensuring you're working from the most complete set of sources.
Analyze and synthesize the law
Understand how the law applies to the facts and identify implications, risks, and options.
What you can achieve by using CoCounsel Legal:
- Compare authorities and interpretations with AI-powered Deep Research that explores multiple perspectives and prepares you for all sides of an issue.
- Distill key points and implications from complex legal materials using Practical Law expertise and authoritative Westlaw case law.
- Structure reasoning for internal or external stakeholders with clear, citation-backed insights.
- Conduct sophisticated, multistep research that synthesizes information across jurisdictions and practice areas — all grounded in our trusted content.
Deliver a defensible recommendation
Provide a clear, well-supported answer that decision-makers can act on.
What you can achieve by using CoCounsel Legal:
- Produce research summaries or advisory memos directly within Microsoft Word, maintaining your preferred workflow and document formats.
- Cite authoritative sources to support conclusions with full attribution to Practical Law and Westlaw content.
- Enable quick review and validation with transparent source links and verifiable results.
- Deliver strategic recommendations that demonstrate deep analysis backed by the industry's most trusted legal content.
The only AI legal solution built on Westlaw content and Practical Law expertise
CoCounsel Legal
Transform your legal research and advisory work. Built on the authoritative content of Practical Law and Westlaw, CoCounsel Legal helps in-house teams research complex questions faster, synthesize information more effectively, and deliver confident strategic advice — all within your existing tools.
Explore CoCounsel Legal
Have questions?
See firsthand why customers are choosing Thomson Reuters for their legal research and advisory needs
“When you're not buried in legal paperwork, you can focus on growing the business. CoCounsel has absolutely 10Xed my productivity.”
Gregory Kantor
Chief Financial Officer, OMNIUX
“Westlaw and Practical Law have become a go-to resource for up-to-date legal content and precedents. They have deepened our ability to do research on various matters and save significant time preparing for litigation and advising business units as well.”
Laura Dieudonne
Legal Operations and Administration Director, Delta Air Lines
Explore our insights and resources
CoCounsel Legal Deep Research delivers arguments and rebuttals
Discover how agentic AI explores multiple perspectives to prepare you for every angle of complex legal questions.
Thomson Reuters Launches CoCounsel Legal, Introduces 'Westlaw Advantage' With Agentic AI Deep Research Capabilities
Learn how the latest AI capabilities are transforming legal research workflows.
A fast-moving startup uses CoCounsel to save on legal costs and accelerate growth
“It’s like having a legal analyst on-call, but without the billable hours.” – Gregory Kantor, Chief Financial Officer, OMNIUX
Frequently asked questions
CoCounsel Legal supports a wide range of legal research and advisory needs, including regulatory compliance questions, case law research, contract interpretation issues, risk assessments, policy development, and strategic legal advice across practice areas. The solution is designed to handle both routine inquiries and complex, multijurisdictional research questions.
CoCounsel Legal is built on the trusted legal content of Thomson Reuters, including Practical Law's expert-maintained guidance and Westlaw's comprehensive database of primary and secondary sources. All research results include full citations and direct links to source materials, ensuring your advice is defensible and verifiable. The solution draws from content created by more than 1,200 attorney-editors.
Unlike traditional research tools that require you to manually search, review, and synthesize information across multiple platforms, CoCounsel Legal uses AI to conduct multistep research, analyze sources, and synthesize findings in one seamless workflow. It integrates research, analysis, and drafting capabilities, allowing you to move from question to recommendation without switching between tools.
CoCounsel Legal accelerates every stage of the research and advisory process — from clarifying complex questions to delivering final recommendations. By automating time-consuming research tasks, synthesizing information from authoritative sources, and producing draft memos within your existing workflow, you can respond to urgent business inquiries in hours instead of days while maintaining the quality and defensibility of your advice.