Legal AI is splitting in two—and most people miss the difference

Last week, Thomson Reuters announced that CoCounsel had reached one million users across 107 countries and territories. At the same time, Anthropic unveiled an expanded suite of enterprise plugins for Claude, including specialized tools for legal, finance, and HR work.

These announcements, coming within hours of each other, crystallized what’s really happening in legal AI—and why a Wikipedia screenshot from weeks ago matters more than ever.

A few weeks back, a post from a founder on X made the rounds on LinkedIn.