Thomson Reuters launches the next generation of CoCounsel Legal

Thomson Reuters is adding a variety of updates to CoCounsel Legal, enabling customers to get early access to the next generation of CoCounsel, ahead of the full launch planned for later this summer starting in the U.S, and followed by rollouts in Canada, U.K., and Australia.

The first generation of CoCounsel Legal was built around skills and structured workflows, according to the company.

The next generation works the way an attorney works with a teammate. Describe your matter in plain language and CoCounsel Legal creates a plan, dives deep into legal authority, reasons through the legal issues, retrieves what it needs from your own precedents, and from Westlaw and Practical Law, and drafts with citations. When new information changes the picture, it adapts.

The early access experience is the beginning, the company said. More capabilities coming soon in beta include:

Workspaces give lawyers a dedicated environment for every matter, where their documents, precedents, and prior positions shape the analysis from the start. Context does not get lost between sessions, between colleagues, or between matters. The institutional knowledge that took years to build is available in the workflow right when the user needs it. Workspaces is live now and will get even better in the coming months, the vendor said.

Brief Builder is an agentic drafting tool for complex briefs and motions, grounded in verified Westlaw and Practical Law authority, with citation checking and issue spotting built into the process and the attorney in control at every step.

Firm and organizational intelligence, built in, is a skill-authoring layer that lets lawyers encode their expertise and knowledge directly into CoCounsel Legal. That expertise is then applied consistently across every matter and every lawyer on the team.

Each of these came directly from what legal professionals told Thomson Reuters they needed. A platform that holds the work together, carries context forward, and meets professional standards throughout, the company said.

“CoCounsel Legal is a superior AI tool for litigators—not just for legal research and drafting, but can take a first pass at a legal analysis. It even proactively flagged an anti-assignment issue I hadn’t yet asked about—it anticipated exactly where I was going to prompt it next. It wasn’t making anything up, it was simply surfacing the right extra issue. I’d give the new CoCounsel Legal experience a 10/10,” said Amber Simon, attorney, Polsinelli.

Every CoCounsel Legal customer in the U.S. will see a toggle in the product now. Users can move to the next generation experience and return to the current version at any time. Both remain fully available throughout the early access period. Customers who purchase CoCounsel Legal will have the same experience, with full general availability planned for August 2026.

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