CoCounsel

Editorial Review

CoCounsel made waves as one of the first commercially available GPT-4-powered legal AI tools when it launched in March 2023. The $650 million acquisition by Thomson Reuters validated both the technology and the market, and integration with the Westlaw ecosystem gives it access to one of the most comprehensive legal research databases in the world. The product genuinely delivers on its core promise of accelerating legal research and document review. Its retrieval-augmented approach produces more reliable citations than generic chatbots, and the ability to upload and analyze proprietary documents is valuable for litigation and transactional work alike. The main concern for buyers is the pricing, which at roughly $500 per seat per month is a significant investment, especially for smaller firms. Additionally, the ongoing integration into the Thomson Reuters product suite means the standalone Casetext experience may evolve in ways that favor Westlaw bundle customers. Firms already in the Thomson Reuters ecosystem will benefit most.