Microsoft is continuing to invest in its new partnership with Anthropic, while distancing itself further from OpenAI. On Wednesday, the tech giant announced that two of Anthropic's frontier models, Claude Sonnet 4 and Opus 4.1, were now available through its Copilot AI assistant. Also: Microsoft's new Windows AI Labs lets you try experimental features first how to opt in Copilot will continue to be powered by OpenAI's latest models, and now our customers will have the flexibi
