Microsoft is expanding its AI portfolio by adding Anthropic’s Claude Opus 4.1 and Claude Sonnet 4 models to its Copilot assistant. The move, announced on a Wednesday, follows a recent agreement to embed Anthropic’s technology in Office 365 apps such as Word, Excel, and Outlook. Business users of Copilot will now be able to select between OpenAI’s deep‑reasoning models and Anthropic’s offerings for tasks ranging from complex research to custom AI tool creation. Opus 4.1 targets advanced reasoning and coding, while Sonnet 4 focuses on routine development, large‑scale data processing, and content generation. Read more →