Thomson Reuters is integrating Anthropic's Claude into its artificial intelligence legal tool, CoCounsel Legal.
The company's next-generation legal assistant platform has been rebuilt using Anthropic's Claude Agent SDK. This signifies a shift to a new operational model: the system can now autonomously plan, select tools, retrieve authoritative content, and make dynamic adjustments within its workflow.
The company states that lawyers will be able to describe cases in plain language, and CoCounsel Legal will then execute precise queries, draft documents with citations, and attach verified references to work products that meet fiduciary standards.
Currently, CoCounsel Legal is widely used by legal professionals at major law firms, corporate legal departments, and government agencies. Thomson Reuters indicates that with the latest version, professionals will be able to seamlessly transition tasks between Claude and CoCounsel Legal's fiduciary-standard workflows.
The company notes that the adoption of legal AI continues to accelerate. However, simultaneously, the gap is widening between the speed and convenience of general AI and the accuracy and verifiability of professional-grade systems.
David Wong, Chief Product Officer at Thomson Reuters, said, "Thomson Reuters is committed to making CoCounsel Legal the central system for legal work. It not only meets fiduciary standards and connects with the various tools lawyers already use, but is also specifically engineered to the high standards required for legal practice."
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