Casetext is an AI-powered legal research and litigation support platform that was acquired by Thomson Reuters in 2023 for approximately 650 million dollars. The platform's flagship AI product, CoCounsel, is a legal AI assistant built on large language model technology that performs substantive legal work including legal research, document review, contract analysis, deposition preparation, and timeline creation. Founded in 2013 by Jake Heller and Pablo Arredondo in San Francisco, Casetext initially launched as a legal research database and evolved into one of the first companies to apply advanced AI to legal practice. CoCounsel can conduct comprehensive legal research by analyzing a legal question, identifying relevant jurisdictions and legal concepts, searching case law and statutes, and producing a research memo with citations and analysis. The platform's document review capabilities allow attorneys to upload large sets of documents and ask questions about their contents, with the AI identifying relevant information, key provisions, and potential issues across the entire document set. CoCounsel's contract analysis feature reviews agreements to identify risks, missing provisions, and deviations from standard terms. The deposition preparation tool generates potential deposition questions based on case documents, while the timeline feature extracts and organizes chronological events from case materials. Following the Thomson Reuters acquisition, CoCounsel technology has been integrated into Westlaw, Thomson Reuters' flagship legal research platform, as CoCounsel on Westlaw, bringing AI-powered research assistance to Westlaw's extensive user base. The platform maintains robust security practices appropriate for handling confidential legal materials. Casetext offers tiered pricing for its standalone platform, with individual plans starting at approximately 250 dollars per month and firm-wide enterprise plans available with custom pricing. Access to CoCounsel features through Westlaw is included in certain Westlaw subscription tiers.
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