Microsoft 365 Copilot Blog

April 28, 2026

Today we’re expanding model choice in Microsoft 365 Copilot with the addition of Anthropic’s latest model—Claude Opus 4.7—now available in Copilot Cowork (Frontier) and Copilot Studio early release cycle environments, and rolling out to Copilot in Excel. Opus 4.7 is designed to be faster and more precise, with improved ability to select the right tool for the task. It handles complex …

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