CoCounsel by Thomson Reuters

The assistant enables lawyers to perform time-intensive legal research tasks in minutes rather than hours: reviewing contracts for specific provisions, researching case law on narrow legal questions, summarizing deposition transcripts, analyzing regulatory filings, and drafting legal memos based on research findings.

Each output includes citations to primary sources so attorneys can verify the AI's analysis before relying on it a critical safeguard in a profession where hallucinated case citations could cause professional and reputational harm.

CoCounsel's document review capability allows legal teams to process large collections of discovery documents, flagging relevance, privilege, and responsiveness based on attorneys' specific parameters.

The system handles the volume that would otherwise require large contract reviewer teams, surfacing the documents most likely to contain the facts, communications, or admissions the legal strategy depends on.

For deal teams, the due diligence module reviews data room documents representations and warranties, material contracts, litigation history, IP assignments systematically against a customizable checklist, producing structured summaries that accelerate the deal timeline.

Thomson Reuters positions CoCounsel as an AI assistant that amplifies attorney judgment rather than replacing it handling the information-intensive groundwork that consumes billable hours without generating insight, freeing lawyers to focus on analysis, strategy, and client counsel.

Integration with Westlaw gives CoCounsel access to the most comprehensive U.S. legal database, grounding research outputs in authoritative sources that solo practitioners and smaller firms using generic AI tools cannot access.