Claude for Word — Inside Your Documents
Anthropic shipped Claude for Word: the sidebar that ended the copy-paste dance, the four things Claude does in Word, and how legal and finance teams actually use it.
Claude is now inside Microsoft Word. Anthropic shipped Claude for Word on April 10, 2026: a sidebar inside your doc, not a new tab. Beta for Pro, Max, Team, and Enterprise. Install from Microsoft AppSource.
The dance this kills: copy the text out of Word, paste it into Claude, read the response, copy the edits back, manually re-apply tracked changes, and pray your formatting survived. Every round trip lost something: footnotes, comments, defined-term consistency, the structure of the document itself.
What changed: you select text (or don't), describe what you want, and Claude's response lands as native Word tracked changes. Accept or reject each one in the review pane, same as human markup. Heading styles, numbering schemes, and defined terms carry through.
Four things Claude does inside Word, from the product page:
Work through comments: leave a comment, Claude edits the anchored text and replies in the thread.
Draft in your template: Claude writes in your heading and bullet styles, with citations to uploaded sources.
Check for consistency: flags inconsistent defined terms, broken cross-references, numbering errors.
Rewrite what you select: only the selection changes.
How legal teams use it: comment-driven edits. Drop a comment on a clause with the change you want. A prompt Anthropic ships on the product page: "Help me soften the indemnification clause and make it mutual." Claude edits the anchored text as a tracked change and replies in the thread with what it changed and why. The reviewer sees a standard redline plus an explanation.
How finance teams use it: drafting inside templates. Open your memo template, upload a 10-K, and ask: "Draft a Thesis section, three points, using numbers from the attached 10-K." Claude writes inside your existing styles, with citations back to the source. No re-formatting pass after.
The feature you'll never stop using: consistency check. Run it on a 40-page contract. Claude flags every place "Agreement" is defined two different ways, every broken cross-reference, every numbering error. Each fix lands as a tracked change. A third prompt from the page: "What did the other side change in section 4, and are any of these dealbreakers?"
The habit to build: never accept all. Tracked changes mean you always see exactly what Claude touched, and reviewers downstream see the full audit trail. Claude is right a lot, but "a lot" is not "always." In a document that matters, the last mile is yours.
Claude carries context across Word, PowerPoint, and Excel. One conversation: draft the memo in Word, pull numbers from an Excel model, build the deck in PowerPoint. Start the conversation once at the beginning of the project and work across all three tools without re-briefing.
Save a workflow as a Skill. Dial in a contract-review or status-memo workflow once, save it, and anyone on your team runs it with the same quality. One partner tunes the "contract review" Skill; every associate inherits that expertise. The firm's IP stops living in one lawyer's head.
What shipped: Claude for Word, in beta for Pro, Max, Team, and Enterprise via Microsoft AppSource. Native tracked changes, formatting preserved, cross-product context with Excel and PowerPoint, and Skills for team workflows.
How to use it: drop comments where you want changes, draft inside your templates, run consistency checks on long docs, and never "accept all." AI is moving from a place you go to a thing inside the tools you already use.