Were excited to announce that were expanding the models that power Microsoft 365 Copilot with the addition of Anthropic models. Copilot will continue to be powered by OpenAIs latest models, and now our customers will have the flexibility to use Anthropic models too—starting in Researcher or when building agents in Microsoft Copilot Studio . The addition of Claude Sonnet 4 and Claude Opus 4.1 advances our commitment to bring the best AI innovation from across the industry to Microsoft 365 Copi
