Microsoft-installed Core Agents in Microsoft 365 Copilot
Microsoft has designated the Planner Agent as a core agent. Core agents are fully controlled by Microsoft. Find out what this means for your organization.
Microsoft Copilot
New Microsoft 365 Admin setting to control AI Models in Preview
Microsoft introduced a new admin setting in the Microsoft 365 admin center to control AI models in preview, including Anthropic’s Mythos-class models with data retention.
The Frontier Admin Control supports Entra ID groups again
The Frontier Admin Control now supports Entra ID groups again for managing Frontier enrollment, alongside individual user assignments. Microsoft had removed this option in November 2025.
From Agent Builder to the Agent Store: Users can now submit Copilot agents for org-wide use
Agent Builder in Microsoft 365 Copilot Chat now lets users submit their Copilot agents for review by IT administrators, making them available to everyone in the organization or to a specific group of people through the Agent Store.
Audio Recaps in Teams are now available in additional languages
Audio Recap in Teams now supports additional languages, allowing users to customize executive- or podcast-style meeting summaries in their preferred language.
Planner Agent in Microsoft 365 Copilot reaches general availability
Microsoft will release the Planner Agent to general availability, enabling all Microsoft 365 Copilot users to create and manage tasks and plans within Copilot experiences. The agent is automatically preinstalled for eligible users, with no option to restrict the availability to specific users.
Learning Agent is now generally available in Microsoft 365 Copilot
Microsoft informed about the general availability of Learning Agent in Microsoft 365 Copilot, previously available in the Frontier program, bringing personalized, AI-assisted upskilling to the tools users already use.
Authoritative Sites in SharePoint: Trusted organizational information in Copilot
Microsoft introduced Authoritative Sites for SharePoint, allowing administrators to designate sites as trusted sources of organizational information prioritized in Copilot Chat and Copilot Search, with two-class search results for your users.
Mistral AI as an external LLM provider in Copilot Studio (Preview)
Microsoft added Mistral AI as a selectable LLM provider in Copilot Studio. Mistral Medium 3.5 is currently in Public Preview and experimental, and must be explicitly enabled by an administrator before makers can use it.
Agentic Outlook Calendar capabilities in Microsoft 365 Copilot
Microsoft has added agentic calendar capabilities to Microsoft 365 Copilot for users in the Frontier program, enabling users to automatically accept, decline, and manage Outlook meetings.