Microsoft has sealed a deal with Anthropic to give users of Microsoft 365 Copilot the option to use the Claude AI engine.

"Our multi-model approach goes beyond choice," chirped CEO Satya Nadella on Wednesday. "It's all about bringing the best AI from across the industry to Copilot, tuned for work and tailored to every business."

Microsoft is adding Claude Opus 4.1 and its Sonnet 4 bot as options for commercial Frontier Copilot users. Drop down the scrolling menu past version four and five flavors of GPT and there's a couple samples from Claude to try out, as you can see below. However, you'll need your admin's permission to start building a bot on Claude code.

Microsoft's closer ties with Claude are just the start, explained Charles Lamanna, Redmond's president of business & industry fo

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