Anthropic brings Claude into Microsoft Word, and legal contract review leads its use cases

In short: Anthropic has released a beta add-in that places Claude directly inside Microsoft Word, with every AI-generated edit appearing as a native tracked change and legal contract review listed first among the tool’s example applications. The add-in, available to Claude Team and Enterprise subscribers, completes Anthropic’s integration across the full Microsoft Office suite and arrives two months after the company’s legal plugin for its Claude Cowork platform wiped an estimated $285 billion in market value from legal technology and data companies in a single trading session.

A sidebar that reads contracts and redlines them

Anthropic released Claude for Word in public beta on 10 April 2026, available as a native sidebar add-in for Microsoft Word on Mac and Windows via the Microsoft AppSource marketplace. The add-in places a persistent Claude interface inside Word without requiring users to leave the application or paste text into a separate ...