After the fuss around the initial introduction of the Anthrophic models into Microsoft 365 in September, we learn that Microsoft will enable access for all in January 2026. It would have been so much better had Microsoft said that they were working on the data protection arrangements with Anthrophic, but that didn’t happen. Is all well now? We’ll see in January…
The question was asked if it was possible to identify use of the Claude LLM by the Copilot Researcher Agent. Audit records often help, so that’s the natural location to check. As it turns out, some information is captured when the Researcher agent is used, but figuring out if the agent uses the default ChatGPT-5 or Claude LLMs is a matter of intuition (or guesswork).
On September 24, Microsoft announced that Anthrophic LLMs could be used with the Copilot Researcher agent and to build agents with Copilot Studio. Although it’s great to enable choice so that customers can choose the AI model they prefer, questions about data security, lack of support for compliance solutions, and adherence to standards like the EU data boundary will concern Microsoft 365 tenants.