Anthropic's Claude replaces Copilot in Microsoft 365 with cross-app AI

Microsoft 365 users looking for AI assistance now have a worthy alternative to Copilot: Anthropic's Claude. By installing free add-ins from the Microsoft Marketplace, users can integrate Claude directly into Word, Excel, PowerPoint, and Outlook. The key differentiator is cross-application intelligence — you can ask Claude to create a PowerPoint deck based on data in an Excel spreadsheet, or draft a Word document from a presentation's content. This functionality requires a paid Claude subscription (Pro, Max, Team, or Enterprise), a Microsoft 365 plan, and the relevant add-ins. The add-ins support Office 2016 or later on Windows and Mac, as well as the web versions.

Setting up the add-ins is straightforward. Navigate to the Claude for Microsoft 365 page on the Microsoft Marketplace, click Get it now, sign in, and download the individual add-ins for Word, Excel, and PowerPoint (or grab the all-in-one Claude for Microsoft 365 add-in). The article's author, Lance Whitney, tested the setup with a Microsoft 365 Family plan and a Claude Pro subscription, reporting smooth integration. While Copilot remains the default AI assistant for many, Claude's unique ability to connect and transform data across apps gives power users a compelling reason to switch — especially for tasks like automated reporting, data visualization, and document generation.