Thomson Reuters today announced the launch of CoCounsel Legal, a new AI solution that promises to fundamentally change how legal professionals approach their work. Unlike traditional AI tools that act as “copilots,” CoCounsel Legal is built on a foundation of agentic AI, designed to execute multi-step tasks autonomously and with transparent reasoning. This next-generation platform combines legal research, workflow automation, intelligent document management, and AI assistance into a single, unified solution.
The cornerstone of CoCounsel Legal is “Deep Research,” which Thomson Reuters is calling the legal industry’s first professional-grade agentic AI research capability. Grounded in authoritative Westlaw and Practical Law content, Deep Research goes beyond simply summarizing search results. It can reason, plan, and deliver complete reports that are fully cited and explained. Legal professionals can hand off complex research questions, and the AI will not only provide a structured report but also outline the multi-step research plan it followed and trace its logic. This level of transparency is crucial for maintaining the oversight and trust lawyers need to confidently adopt AI in their practice.
In addition to deep research, CoCounsel Legal features a growing library of “guided workflows.” These multi-step task flows apply agentic AI to high-friction legal tasks, leveraging Thomson Reuters’ vast expertise. Rather than requiring a series of individual prompts, these workflows can handle entire processes from start to finish. Examples of new workflows include drafting complaints, privacy policies, discovery requests and responses, and reviewing deposition transcripts. These workflows embed legal content and structured reasoning, helping teams move faster while retaining human 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 transform how professionals approach complex legal work, moving beyond simple prompting to sophisticated, multi-step task execution, and that’s a huge leap forward in what legal AI can deliver.”
With over 20,000 law firms and corporate legal departments already using CoCounsel, the launch of CoCounsel Legal builds on an already trusted foundation. This new solution represents Thomson Reuters’ vision to deliver an AI-powered operating system for knowledge work across various professional functions, solidifying its position at the forefront of legal technology innovation.
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