What’s new for Copilot – September 2025
September brought another wave of updates for Copilot across Microsoft 365, but one stands out as a true game changer: Copilot now supports models beyond GPT. This marks a major step toward giving organizations more flexibility and choice in how they leverage AI within Microsoft’s ecosystem.
The first implementation of this shift is already here—Anthropic’s Claude models (Opus 4.1 and Sonnet 4) are now available in Copilot Researcher and Copilot Studio, alongside OpenAI models. This opens the door to a multi-model future where users can pick the best AI for their needs. Rollout began on September 24, with Anthropic models in preview and governed by Anthropic’s terms. Don’t miss the details in this article—there’s plenty more AI innovation to explore across your favorite Microsoft 365 apps.


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