One Million Professionals Turn to CoCounsel as Thomson Reuters Scales AI for Regulated Industries

Executive Summary

• Thomson Reuters announced that CoCounsel, its professional‑grade AI platform, now has one million users across 107 countries and territories.
• The company highlighted the shift from AI pilots to production‑grade systems in regulated industries such as legal, tax, audit, risk, compliance and global trade.
• Upcoming enhancements include a next‑generation CoCounsel Legal beta with conversational task execution and further capabilities slated for later in 2026.

Key Details

• User Milestone: One million professionals have adopted CoCounsel, representing usage in 107 countries/territories.
• Industry Reach: Adoption spans high‑stakes sectors—legal, risk, compliance, tax, accounting, audit and global trade.
• Product Positioning: CoCounsel is marketed as “professional‑grade” AI that provides citation‑backed outputs, authoritative source retrieval, jurisdiction‑specific rule application, and strict data‑privacy safeguards (customer data not used to train third‑party models).
• Content & Validation: Outputs are grounded in Thomson Reuters’ 175‑year licensed content base; more than 4,500 subject‑matter experts contribute to validation and continuous refinement.
• Technology Stack: Multi‑model architecture leveraging Anthropic’s Claude, OpenAI’s GPT, Google’s Gemini, proprietary models, and structured datasets with governance controls.
• Integration: CoCounsel is embedded within existing Thomson Reuters platforms (e.g., Westlaw, Practical Law, ONESOURCE+), enabling end‑to‑end workflow execution for research, drafting, analysis, and compliance tasks.
• Next‑Generation Roadmap:
• CoCounsel Legal Beta (2026): Conversational task execution—users can brief the AI like a colleague; system builds plans, retrieves authority, verifies citations, and delivers structured work products.
• Future Enhancements: Additional capabilities for CoCounsel Tax and ONESOURCE+ planned later in 2026.
• Strategic Message: Emphasis on moving AI from “almost right” to “right enough” for regulated work where errors have legal or financial consequences.

Notable Quotes

• “Professionals are not deciding whether to use AI anymore. They are deciding which AI they trust when their reputation and their clients' data are on the line,” – Steve Hasker, President & CEO, Thomson Reuters.
• “When the work matters, the AI must be professional grade… That’s the gap between CoCounsel and everything else,” – David Wong, Chief Product Officer, Thomson Reuters.