Microsoft announced that its AI assistant, 365 Copilot, will now include two Anthropic models—Claude Sonnet 4 and Claude Opus 4.1. The new models will sit alongside OpenAI’s ChatGPT, offering users alternative AI perspectives for specific tasks. They will be available in Copilot’s Researcher agents and Copilot Studio, with access initially limited to customers who opt in through the Frontier Program. Read more →