CoCounsel's Owned Legal Research
Director of Innovation at large law firm on why firms adopt Harvey over Legora
The key advantage is that Thomson Reuters owns the legal answers layer, not just the AI interface. CoCounsel sits on top of Westlaw and Practical Law, so a lawyer can ask a research question, pull cited authority, and move straight into drafting in one system. Harvey and Legora are strong workflow products, but their research depth depends more on partnerships, integrations, and model orchestration than on a proprietary legal corpus.
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This matters most in litigation and research heavy work. Thomson Reuters describes CoCounsel Legal as using current, validated Westlaw and Practical Law content for research, drafting, and analysis, which gives firms one vendor for both the database and the AI assistant.
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Harvey has closed part of that gap through LexisNexis. Its June 18, 2025 alliance brought Lexis primary law and Shepard's citations into Harvey, but that still means Harvey accesses core research through an external provider rather than owning the underlying research asset itself.
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That ownership changes procurement. Many firms already have large Thomson Reuters contracts and lawyer habits built around Westlaw, so CoCounsel can be sold as an extension of an existing budget and workflow, while Harvey and Legora often need to justify a new layer of spend and governance.
The market is moving toward bundled legal AI suites. As research incumbents wire AI into their owned content and workflow stack, standalone assistants will keep adding drafting, review, and agent features, but the durable advantage will sit with whoever controls both the lawyer's daily workflow and the trusted legal source material underneath it.