Microsoft Adds Claude & Opus to 365 Copilot: A Multi-Model Leap

[UK Sentinel]

Microsoft has officially integrated Claude Sonnet 4 and Opus 4.1 into its Copilot marking a major shift toward a multi-model AI future. Previously reliant on OpenAI’s GPT models, Copilot now lets users toggle between Claude and GPT for tasks like research, automation, and custom agent creation.

What’s New

• Claude Opus 4.1: Ideal for deep reasoning and multi-step analysis.
• Claude Sonnet 4: Balanced speed and intelligence, great for workflow automation.
• Model Switching: A “Try Claude” button now appears in Copilot Studio , allowing users to test Anthropic’s models side-by-side with GPT.

Introducing Microsoft 365 Copilot Tuning, multi-agent orchestration, and more from Microsoft Build 2025

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