Anthropic has released a beta add-in that places Claude directly inside Microsoft Word, allowing every AI-generated edit to appear as a native tracked change and legal contract review. The tool is designed for professionals who work extensively with documents, particularly in legal review, financial memo drafting, and iterative editing. It is available to Claude Team and Enterprise subscribers and completes Anthropic's integration across the full Microsoft Office suite. This follows a series of moves into the legal market, which saw an estimated $285 billion in market value wiped from legal technology and data companies in a single trading session. Anthropic is in discussions to invest $200 million in a private equity-backed joint venture to accelerate enterprise adoption of Claude.