Microsoft Copilot Adds Claude Opus 4.1 and Sonnet 4

September 24, 2025

Microsoft let Copilot business users choose Claude Opus 4.1 or Sonnet 4 beside OpenAI models for research and custom agents, following an earlier Office deal.

Microsoft Anthropic

Sources

TechCrunch

News · Sep 24, 2025

Microsoft adds Anthropic's AI to Copilot

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