CoCounsel
by Thomson Reuters
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.
Why Abandoned
Thomson Reuters currently markets CoCounsel and continues to announce expanded capabilities and integrations, including the 2025 launch of CoCounsel Legal.
💵 Pricing & access
- Pricing model
- Not documented
- Starting at
- Not documented
- Official site
- Visit CoCounsel →
🩺 Health Signals
- HTTP Status
- 200
- Response
- —
- SSL
- —
- Confidence
- 98%
- Domain expires
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- Last content change
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- Last tweet
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- API status
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📅 Timeline
Casetext launches CoCounsel
Casetext introduced CoCounsel as an AI legal assistant powered by OpenAI technology, offering capabilities such as legal research, document review, deposition preparation and contract analysis.
Thomson Reuters completes Casetext acquisition
Thomson Reuters completed its $650 million cash acquisition of Casetext, bringing CoCounsel into its legal technology portfolio.
CoCounsel 2.0 announced
Thomson Reuters announced CoCounsel 2.0, combining Casetext's assistant with capabilities from Westlaw Precision AI and Practical Law to support more complex professional workflows.
CoCounsel Legal launched
Thomson Reuters launched CoCounsel Legal as the legal profession's core version of its professional-grade generative AI assistant, integrating research, drafting, document analysis and Microsoft 365 workflows.
🔄 Alternatives to CoCounsel
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Harvey AI
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Perplexity AI
🟢ActiveAI-powered answer engine that provides cited, real-time answers to complex questions.
🪦 Other dead Legal tools
BlackBoiler
🟡Acquired / MergedBlackBoiler developed AI-assisted contract review software that analyzed agreements against company playbooks and produced tracked-change redlines in Microsoft Word for legal teams and contract professionals.
Gavelytics
🟡Acquired / MergedGavelytics was a litigation analytics platform for U.S. state-court lawyers. It analyzed judicial rulings, motion outcomes, and court records to support legal research, case strategy, and business development.
ROSS Intelligence
🔴Shutdown / DeadROSS Intelligence was an AI-assisted legal research platform for lawyers. Founded in Toronto and later based in the United States, it ceased operations in 2021 amid copyright litigation brought by Thomson Reuters.
eBrevia
🟡Acquired / MergedeBrevia is contract-analysis software that uses natural-language processing and machine learning to extract provisions and data from legal documents for due diligence, contract management, and compliance workflows.
❓ Frequently Asked Questions
What is CoCounsel AI?
CoCounsel is a generative AI assistant from Thomson Reuters for legal and other professional workflows. It can help with legal research, document analysis, drafting, summarization and task automation.
Who owns CoCounsel?
Thomson Reuters owns CoCounsel. It acquired CoCounsel's original developer, Casetext, for $650 million in cash in August 2023.
When was CoCounsel launched?
Casetext publicly launched CoCounsel on March 1, 2023. Thomson Reuters later expanded the product through CoCounsel 2.0 and CoCounsel Legal.
What can lawyers use CoCounsel for?
Lawyers can use CoCounsel for legal research, reviewing and summarizing documents, drafting, contract analysis, deposition preparation and workflows connected to Thomson Reuters legal content and Microsoft 365.
Is CoCounsel still available?
Yes. CoCounsel is active and marketed by Thomson Reuters, which continues to develop the platform and integrate it with products including Westlaw, Practical Law and Microsoft 365.