Thomson Reuters Reshapes the Future of Law with Agentic-Powered CoCounsel Legal, Featuring Deep Research
Deep Research in CoCounsel is an industry-first AI solution grounded in Thomson Reuters expert legal content, starting with Westlaw.
Today, Thomson Reuters announced the launch of CoCounsel Legal featuring Deep Research and guided workflows. This milestone product release showcases Thomson Reuters most advanced AI offering to date, designed to help professionals move beyond prompting—and start delegating.
Thomson Reuters is uniquely positioned to deliver this agentic AI breakthrough because it already has access to an AI assistant with advanced reasoning models, comprehensive legal content and tools, and expertise from thousands of domain experts—the three essential components required for reliable, professional-grade agentic AI.
CoCounsel Legal: Built for Execution, Not Just Ideas
CoCounsel Legal is a next-generation AI product that brings together legal research, essential workflow automation, intelligent document management, and AI-powered legal assistance within one unified solution. It’s the first time agentic AI has been deployed this broadly across professional legal workflows—with the infrastructure and scale to support enterprise-wide transformation.
Unlike AI copilots that sit beside the work, CoCounsel Legal is embedded in it—built to drive real outcomes in litigation, transactional work, and regulatory analysis. It represents the foundation for how professional AI will be delivered across law firms and legal departments into the future.
Deep Research in Westlaw: AI That Thinks Like a Lawyer
CoCounsel Legal includes Deep Research, which is grounded in Thomson Reuters content, starting with the expertise from Westlaw. It’s the legal industry’s first enterprise-grade agentic AI research capability—built to reason, plan, and deliver complete legal research results. It enables legal professionals to hand off full research questions to an AI that not only understands the assignment — it explains its process, sources its answers, and builds the argument foundation.
Deep Research can:
- Generate and adapt multi-step research plans
- Trace its logic with transparent reasoning
- Deliver structured, Westlaw citation-backed reports
- Keep human reviewers in the loop, every step of the way
“Deep Research in CoCounsel is a game changer—it’s the most innovative use of AI we’ve seen in legal research,” said [Customer Name], [Title, Organization]. “It doesn’t just return results—it delivers reasoning, transparency, and precision at a level that sets a new standard for the entire industry. This is what the future of legal AI looks like.”
Guided workflows: Multi-Step AI That Actually Works
Also included in CoCounsel Legal is a growing library of guided workflows—multi-step task flows that apply agentic AI to high-friction legal work, leveraging Westlaw and Practical Law expertise. In addition to the CoCounsel guided workflows launched in July, there are new workflows launching this month:
- Draft a complaint
- Draft discovery response
- Draft discovery request
- Deposition transcript review
These workflows embed legal content, apply structured reasoning, and provide human oversight by design—helping lawyers and corporate legal teams move faster while staying in control.
“This is where AI starts to feel less like a tool and more like a teammate,” said David Wong, Chief Product Officer at Thomson Reuters. “Guided workflows are how professionals start delegating—not just prompting—and that’s a huge leap forward in what legal AI can deliver.”
Trusted by the Legal Market
Over 12,200 law firms, 4,900 corporate legal departments, majority of the top US courts and AmLaw 100 firms already trust CoCounsel. With CoCounsel Legal and Deep Research the company is setting a new benchmark for trusted, explainable, and production-ready AI in legal practice.
Additional Information
- For more details about Deep Research in CoCounsel
- For more details about our recently launched CoCounsel guided workflows and Library of prompts, skills and workflow
- For updates from our President, Legal Professionals
- For Updates from our President, Corporates
- For more on Knowledge Search in CoCounsel
