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Microsoft 365 Copilot Blog
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Available today: Anthropic Claude Opus 4.8 in Microsoft 365 Copilot

Bas Brekelmans's avatar
Bas Brekelmans
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May 28, 2026
Today we’re expanding model choice in Microsoft 365 Copilot with the addition of Anthropic’s latest model—Claude Opus 4.8. Available now in Copilot Cowork (Frontier) and rolling out to Copilot Chat, ...
Updated May 28, 2026
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amolmorankar's avatar
amolmorankar
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May 28, 2026

Thanks, this is great news. Is the Claude Opus model also available for custom agents? I’m not seeing it in Copilot Studio for my custom agents at the moment. Could you share if there’s a timeline for when it will be supported for custom agents we’re building?