Claude arrives in Microsoft 365 Copilot for businesses
Microsoft is adding Claude Sonnet 4 and Claude Opus 4.1 to Microsoft 365 Copilot for business customers who sign up for its early access program. The models are initially available in Researcher and Copilot Studio, and are hosted outside environments managed by Microsoft.
Claude can now be used inside Microsoft 365 Copilot, but not as an open feature for every user. Microsoft is introducing it first in business tools through an opt-in access system.
The integration adds Claude Sonnet 4 and Claude Opus 4.1 to the options available to Microsoft 365 Copilot customers. The idea is for each organization to choose which model to use based on the type of task it needs to handle.
Two ways to use Claude in Microsoft 365
The first option is Researcher, Microsoft's agent for conducting complex research. It can consult the web, external sources and a company's work content, including emails, chats, meetings and files.
With this integration, Researcher can run on Claude Opus 4.1. In practice, you could use it to prepare a launch strategy, analyze market trends or produce a quarterly report based on your company's internal information.
The second option is Copilot Studio, Microsoft's platform for creating custom agents. There, companies can choose Claude Sonnet 4 or Claude Opus 4.1 to build assistants that automate processes, coordinate tasks across multiple agents or handle work that requires more advanced reasoning.
This is not just about chatting with Claude. Copilot Studio lets you configure agents for specific tasks, such as classifying requests, querying databases, preparing responses or moving information between different work tools.
What changes for businesses
Microsoft 365 Copilot is no longer dependent on a single family of models. For businesses, that means more flexibility to choose the model that best fits each use case, instead of always using the same system for everything.
Initial access is available to customers with a Microsoft 365 Copilot license who sign up for the Frontier Program, Microsoft's program for testing new features before they become generally available. An administrator must enable access to Anthropic's models from the Microsoft 365 admin center.
There is one important condition: Anthropic's models are hosted outside environments managed by Microsoft and are subject to Anthropic's terms and conditions. Organizations will therefore need to review their internal privacy, security and compliance requirements before enabling them.
For you, the change will be most noticeable if you work for a company that already uses Microsoft 365 Copilot and decides to activate this option. In that case, some research tasks and agents created in Copilot Studio will be able to run on Claude, although initial availability remains limited to these features and the early access program.
Microsoft has also said it is preparing more Claude experiences within Microsoft 365. The direction is clear: major productivity platforms are starting to offer multiple AI models for businesses to choose from, instead of presenting a single assistant with fixed capabilities.