Thomson Reuters: large-firm CoCounsel economics raise the benchmark for midmarket ROI

Thomson Reuters' discussion of a 2026 Forrester Consulting study says large-firm CoCounsel Legal users moved from 36.9 to 48.2 matters per month per attorney, with 82% reporting meaningful time savings and 75% reducing non-billable write-downs. The source explicitly frames large-firm scale as producing compounding ROI smaller firms cannot easily match. Midsized firms need their own ROI story rather than borrowing enterprise economics; the relevant question is where AI improves capacity, realization, write-downs, and retention without requiring BigLaw-scale deployment.