Casetext (CoCounsel)

CoCounsel is a professional AI assistant from Thomson Reuters aimed at legal, tax, audit, and accounting teams. The product is positioned as “industry-leading AI for professionals” and is built around trusted domain content rather than general-purpose chat.

According to the site, it integrates with tools professionals already use, including Westlaw, Practical Law, Checkpoint, Microsoft 365, and document management system partners. It is designed to fit into existing workflows, with context-aware assistance across products and tasks.

The strongest signal in the content is trust and security: Thomson Reuters says CoCounsel uses authoritative content, is backed by its AI and machine-learning experts, and is not used to train AI models with customer data. That makes it a better fit for regulated or sensitive professional work than a generic assistant.

That said, the page does not spell out exactly which tasks are fully automated versus assisted, so it is safer to view CoCounsel as a workflow copilot rather than a fully autonomous agent. Pricing was not publicly available on the page, and model details are described only in broad terms as using “the most innovative large-language models,” without naming vendors or support for local models.