Microsoft announces Copilot Cowork with help from Anthropic — a cloud-powered AI agent that works across M365 apps

If you thought Anthropic was about to run away with the enterprise AI business...you're not totally off the mark, actually.This morning, Microsoft announced "Copilot Cowork" a new cloud-based AI agentic automation tool within Microsoft's existing AI tool 365 Copilot, except now it can complete work on users' behalf across many Microsoft apps, instead of contained within each one. If it sounds suspiciously similar to Anthropic's own "Claude Cowork" applications for Mac and Windows (released in January and February of 2026, respectively) that's to be expected — as Microsoft and Anthropic worked together on this new feature. Copilot Cowork is the centerpiece of what Microsoft is calling "Wave 3" of Microsoft 365 Copilot — a sweeping platform update that also brings agentic capabilities direct