CoCounsel Legal
Introducing the next generation — AI built to the standard the profession demands
Meet CoCounsel Legal
Legal AI engineered to work at the level of a senior associate
CoCounsel Legal now has more agentic AI capabilities. It's the only legal AI that reasons from trusted Practical Law guidance, authoritative Westlaw primary law, 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.
76%
agree CoCounsel Legal had improved research and drafting quality.*
64%
agree CoCounsel Legal has helped reduce risk — fewer errors, reduced exposure, and improved compliance.*
1/3
average reduction in time spent on document review, research, and drafting*
*Forrester Total Economic Impact(TM) study commissioned by Thomson Reuters, 2026
Capabilities
Move seamlessly from prompt to polished work product
Research, analysis, and drafting — delivered together from a single query.
- Describe what you need
- Watch it work
- Rely on trusted content
- Deliver stronger work
- Organize every matter
Fewer steps, bigger outcomes
- Describe what you need in plain language — whether it’s contract review, litigation strategy, regulatory clearance or complex legal research.
- CoCounsel Legal delivers a polished draft, handling each step from start to finish.
- No prompt engineering, no workflows to configure, no tool switching.
Purpose-built for the law
- Designed to work through legal problems the way a lawyer would — forming an approach, pursuing the right inquiry, arriving at a conclusion.
- Each step is visible as it works, so you can follow the reasoning in real time.
- Step in and redirect the work at any point.
Automatically draws from sources you trust
- The only legal AI that reasons using trusted Practical Law guidance and authoritative Westlaw primary law.
- Your organization’s knowledge shapes the analysis, informs the draft, and ensures what comes out reflects your practice.
- The result is work product grounded in the sources the profession has relied on for decades.
More time for the work only you can do
- Get high quality, well-reasoned work product ready for your review.
- Every citation is linked and one click away for easy verification.
- Spend more time on the judgment, strategy, and expertise that only you can bring.
Context that stays with the matter
- Workspaces keep your documents, templates, and prior work organised by matter.
- The context is always there — pick up exactly where you left off, with reasoning that reflects the full history of the matter.
- Spend less time managing the matter and more time working on it.
Experience everything CoCounsel Legal has to offer
Fiduciary-Grade AI™: Built for legal work you can stand behind
Grounded in trusted sources
The only legal AI built on Practical Law and Westlaw — reasoning from trusted authority and know-how alongside your organisation’s data on every matter.
Engineered for the law
Purpose-built with practicing lawyers, CoCounsel Legal is designed to work through a legal problem the same way a lawyer would.
Built for defensibility
The reasoning path is visible as it works and results are designed to be transparent and verifiable so you can work with confidence.
Your data stays yours
Operate confidently knowing your sensitive data is secure, private, and not being used to train AI models.
Case studies
CoCounsel in action
Hull & Hull LLP’s journey with Thomson Reuters CoCounsel
Toronto estate litigation firm Hull & Hull LLP uses CoCounsel to elevate quality, streamline workflows, and keep lawyers focused on strategic work.
Carnevale Business Law turns efficiency into client value with CoCounsel and Westlaw Advantage
By adopting AI solutions from Thomson Reuters, Carnevale Business Law reduces process-heavy work and redirects that time to strategy, creative thinking, and client service.
From exploration to everyday use: How Scharfstein LLP implemented Thomson Reuters AI Solutions
See how the firm built on its commitment to client service by thoughtfully integrating Thomson Reuters Westlaw and CoCounsel into everyday legal practice.
Frequently asked questions
CoCounsel Legal is the only solution that combines advanced AI with Westlaw Advantage Canada authority and Practical Law Canada guidance to help you complete complex research, drafting, and analysis with speed and precision. Seamlessly integrated with Microsoft 365, document management system (DMS) providers, and HighQ, results are grounded in both our trusted content and your organization’s own documents and institutional knowledge.
Use CoCounsel Legal to help with research, analysis, and drafting tasks, such as modifying a contract or reviewing documents. You can also tap into powerful agentic AI with features like Deep Research, which emulates the approach of an experienced legal professional, formulating and executing a multistep plan to address your legal questions comprehensively.
Yes, CoCounsel Legal uses generative AI and agentic AI to power capabilities like Deep Research and document analysis, which help transform the way legal professionals work. Grounded in trusted Westlaw Advantage Canada and Practical Law Canada content, CoCounsel Legal provides verifiable results so you can feel confident your work is thorough and accurate.
Questions about CoCounsel Legal? We're here to support you
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