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Pricing sourced from CoCounsel (by Casetext / Thomson Reuters) · Last verified March 2026
Licensed attorneys, paralegals, in-house legal teams, and — through CoCounsel Core — tax, audit, and risk professionals. It is designed for regulated professional work where citation accuracy, confidentiality, and auditability are required, rather than for casual or consumer use.
CoCounsel is grounded in Westlaw's authoritative legal databases and the documents users upload, with retrieval-augmented generation that links every answer back to source material. This substantially reduces fabricated citations compared to general LLMs, but Thomson Reuters still instructs attorneys to verify every output before relying on it in practice.
No. Thomson Reuters' enterprise terms for CoCounsel state that customer data and uploaded documents are not used to train foundation models, and the platform operates with SOC 2 Type II controls, role-based access, and matter-level data segregation.
Harvey is a custom AI platform aimed primarily at large law firms and competes on bespoke deployment and integrations. Lexis+ AI is the closest direct competitor, grounded in LexisNexis' Shepard's-cited content. CoCounsel's edge is its tight Westlaw and Practical Law grounding plus a mature library of pre-built attorney skills and workflow integrations across Word, Outlook, and HighQ.
Thomson Reuters does not publish public list pricing. CoCounsel is sold via direct sales as part of (or alongside) a Westlaw subscription, with seat- or firm-level pricing negotiated based on user count, modules (Legal, Drafting, Core), and integration needs.
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