Krux
March 10, 2026
Microsoft 365 Copilot Dumps Single-Model Strategy, Adds Claude
Published: March 10, 2026 at 12:31 AM
Updated: March 10, 2026 at 12:31 AM
100-word summary
Microsoft just abandoned the OpenAI-only approach. Starting May 1, Copilot will switch between OpenAI and Anthropic's Claude depending on the task, with a new $15-per-user agent tool called Agent 365 managing the routing. The headline feature is Copilot Cowork, which can reschedule your meetings, generate a client deck, and coordinate launch plans across Outlook, Teams, and files without you touching a keyboard. IT teams get a centralized control panel to monitor what all those agents are actually doing. There's also a $99-per-user "Frontier Suite" tier for companies betting big on this. The shift acknowledges no single model wins at everything.
What happened
Microsoft just abandoned the OpenAI-only approach. Starting May 1, Copilot will switch between OpenAI and Anthropic's Claude depending on the task, with a new $15-per-user agent tool called Agent 365 managing the routing. The headline feature is Copilot Cowork, which can reschedule your meetings, generate a client deck, and coordinate launch plans across Outlook, Teams, and files without you touching a keyboard. IT teams get a centralized control panel to monitor what all those agents are actually doing. There's also a $99-per-user "Frontier Suite" tier for companies betting big on this.
Why it matters
The shift acknowledges no single model wins at everything.