Microsoft is rolling out a batch of Copilot features in Word aimed squarely at legal, finance, and compliance workflows — and the timing is hard to ignore. Anthropic launched a Claude-powered Word plugin just days earlier.
What's new
Copilot can now track changes at the word level, keeping edits auditable and easy to review. Users get direct comment management inside the document, plus the ability to insert tables of contents and configure headers and footers with dynamic fields like page numbers. For longer, multi-step operations, Copilot surfaces a real-time progress view so you can see what it's actually doing. Microsoft says the whole thing runs on something called "Work IQ," a layer that personalizes responses based on the user and their organization. Data stays inside Microsoft 365's existing security boundaries — no new carve-outs required.
Why it matters
Word-level change tracking is a meaningful step up from paragraph-level rewrites. For anyone in a regulated industry where every edit needs a paper trail, that distinction matters a lot. Microsoft is clearly targeting the same professional users Anthropic went after with its Claude plugin — a sign that enterprise document workflows are becoming a real battleground for AI assistant makers.
What to watch
For now, the features are exclusive to Windows desktop via the Office Insiders Beta Channel's Frontier program. Web and Mac support is listed as coming later, with no specific timeline. Whether Microsoft can ship these broadly before Anthropic extends Claude's Word integration will be worth tracking.