AI Magazine May 2026 Issue 42 | Page 49

COCOUNSEL BY CASETEXT( OWNED BY THOMSON REUTERS)
TOP 10 – AI TOOLS FOR LEGAL TEAMS

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COCOUNSEL BY CASETEXT( OWNED BY THOMSON REUTERS)

HEAD OF PRODUCT, COCOUNCIL: JAKE HELLER FOUNDED: 2013 HEADQUARTERED: SAN FRANCISCO, CALIFORNIA, US SERVICES: AI LEGAL RESEARCH & DRAFTING( COCOUNSEL)
Casetext was founded as a legal research platform before developing CoCounsel, an AI legal assistant built on GPT-4. CoCounsel supports a broad range of practical legal tasks, including research memos, document review, deposition preparation and contract analysis, all accessible through an intuitive conversational interface. Prior to acquisition, Casetext had built a strong and diverse client base spanning law firms of varying sizes, demonstrating wide market appeal. In 2023, Thomson Reuters acquired Casetext for US $ 650m
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CoCounsel’ s guardrails against hallucinations
in one of the largest transactions in legal technology history, reflecting the significant value placed on AI-driven legal tools. Following the acquisition, CoCounsel was integrated into the Westlaw platform, one of the most widely used legal research tools in the world. The integration substantially expanded CoCounsel’ s reach, making advanced AI assistance available to Westlaw’ s large subscriber base and marking a milestone in the mainstream adoption of AI within legal practice.
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