Overview / Description
CoCounsel is the AI legal assistant from Thomson Reuters, built on the product originally launched by Casetext and acquired by Thomson Reuters in 2023. It handles core knowledge work — legal research, document review, deposition preparation, contract analysis and drafting — and is backed by Thomson Reuters' authoritative legal content and enterprise-grade security. For small firms, the draw is trust and depth: answers are grounded in vetted legal sources rather than open-web text, and the tool connects to the broader Thomson Reuters research ecosystem, including Westlaw. The trade-off is that CoCounsel is positioned as a professional-grade platform, so small firms should confirm which plan and price tier fits a solo or small-practice budget. It is best suited to firms that want a research-and-review assistant with institutional content behind it.
Used For
AI-assisted legal research, review and drafting
Pros & Cons
Pros
- Grounded in Thomson Reuters' authoritative legal content
- Covers research, review, deposition prep and drafting in one assistant
- Enterprise-grade security backed by an established vendor
- Integrates with the wider Thomson Reuters and Westlaw ecosystem
Cons
- Positioned as a professional-grade platform — confirm small-firm pricing
- Branding has shifted post-acquisition (Casetext to Thomson Reuters CoCounsel)
- Deepest value comes when paired with other Thomson Reuters subscriptions
Questions & Answers
Alternatives
Lexis+ AI, Harvey, Clearbrief