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Internal BuildSeptember 14, 2026· Confirmed

Thomson Reuters launches proprietary 'Thomson' LLM and Next Gen CoCounsel Legal features

Vendors
Thomson Reuters
Significance
High
Confidence
Confirmed

Why this matters

This firm has made a tracked AI move, with Thomson Reuters in the stack. This is a high-significance signal for buyers benchmarking their panel.

Thomson Reuters unveiled 'Thomson,' its own frontier LLM trained on Westlaw, Practical Law, Checkpoint, and Reuters content (~$40M training investment). Alongside it, TR shipped Next Gen CoCounsel Legal with Tabular Analysis (up to 10K documents against 100 questions) and Brief Builder with staged human review. CoCounsel now used by a million professionals in 100+ countries.

Significance
High
Source type
Vendor Announcement

Vendors involved

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