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CoCounsel is Thomson Reuters' generative AI assistant for legal and professional work. Integrated with Westlaw, Practical Law and Microsoft 365, it supports research, document review, drafting, summarization and analysis.
Harvey launched in 2022 with a GPT-4-based product for case research, drafting, and document review tailored to elite law firms. Allen & Overy and PwC became flagship customers. By mid-2025 Harvey had raised over $500M across Sequoia, Kleiner, GV, and OpenAI's Startup Fund at a $5B+ valuation and counted most of the AmLaw 100 as customers. The product, team, and roadmap continue to grow.