Anthropic Models for Copilot in Word, Excel, and PowerPoint on by Default

Starting May 4, 2026, Anthropic models will be enabled by default for Copilot in Word, Excel, and PowerPoint, with data processing outside the EU Data Boundary. Admins can review or change this setting anytime in the Microsoft 365 Admin Center. Word support begins summer 2026. To provide more flexibility on model choice, Microsoft is introducing a new “Copilot in M365 apps with Anthropic models” setting in the Microsoft 365 Admin Center. When this setting is enabled, Anthropic models will be available by default for Copilot in Word, Excel, and PowerPoint. When Anthropic models are used, data processing for these models will occur outside of the European Union Data Boundary (EUDB). Anthropic operates as a Microsoft subprocessor and is subject to Microsoft’s Product Terms, Data Protection Addendum (DPA). No customer data or state is stored outside the EUDB, and all data is encrypted in transit. This setting applies only to Anthropic model usage for Copilot in Word, Excel, and PowerPoint and is separate from the global Anthropic subprocessor setting previously announced here. If your global Anthropic subprocessor setting is already enabled, this update does not introduce any additional change. Otherwise, this setting is enabled by default for your tenant and you can review or change this setting at any time in the Microsoft 365 Admin Center. If no change is made, Anthropic models will be available for Copilot in Word, Excel, and PowerPoint starting May 4, 2026. When this will happen: This change will take effect May 4, 2026. How this affects your organization: Who is affected: Tenants using Microsoft 365 Copilot and Copilot Chat in Excel and PowerPoint. Word support for Anthropic models will be added in summer 2026. Tenants in the European Union (EU), European Free Trade Association (EFTA), and United Kingdom (UK) What will happen: The “Copilot in M365 apps with Anthropic models” setting is now available in the Microsoft 365 Admin Center. If your global Anthropic subprocessor toggle is enabled, this update does not introduce any additional change. Otherwise, this setting is enabled by default for your tenant (based on available capacity from Anthropic) and you can […]

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