Microsoft says Claude models in Copilot will be processed inside its EU Data Boundary by the end of 2026

Charles Lamanna, Microsoft's executive vice president for Copilot, Agents and Platform, wrote on 5 November that Claude models by Anthropic in Microsoft Copilot are coming into the EU Data Boundary.

By the end of 2026, organisations in the European Union and the European Free Trade Association will be able to use Claude models across Copilot, including Copilot Cowork, with processing inside the EU Data Boundary, where their data is already stored, the post says. Claude already works in Copilot experiences such as Copilot Chat, Copilot in the Microsoft 365 apps, Copilot Cowork and Copilot Code.

“The setting is disabled by default in the EU and EFTA,” and administrators can switch it on for all users or for chosen groups. “Organizations already using Claude models in Copilot won’t need to take any action.” The post names no individual Claude model versions and says more details will follow closer to availability.

For European companies whose rules keep data inside the EU, this removes one reason to stay on a single model supplier inside Copilot. The story is in the catch-up lane: it was published on 5 November and ran only as a breadcrumb.

• Confirmed Claude in Copilot will be processed within the EU Data Boundary for EU and EFTA organisations by the end of 2026. Microsoft Copilot Blog
• Confirmed The setting is off by default in the EU and EFTA; existing users need take no action. Microsoft Copilot Blog