On 12 September 2026, Microsoft CEO Satya Nadella posted that more model choice is coming to Copilot and welcomed Grok. Elon Musk quoted the post and stated that Grok is available in Microsoft Copilot.

More model choice coming to Copilot. Welcome Grok!

— Satya Nadella (@satyanadella)

Grok available in Microsoft Copilot

— Elon Musk (@elonmusk)

What was announced

  • Grok models are available for selection inside Microsoft Copilot.
  • The confirmation comes directly from the CEOs of Microsoft and xAI / SpaceXAI via public posts on X.

Context

Microsoft Copilot is Microsoft’s general-purpose AI assistant surface across productivity applications. Earlier in 2026, Grok models had already appeared in related Microsoft products including GitHub Copilot and Microsoft Foundry. This post pair confirms availability specifically inside the main Copilot experience.

Limits of this report

This article reports only the statements made in the two linked X posts. It does not include independent verification of which specific Grok model versions are selectable, plan gating, regional availability, data-handling terms, or rollout timing beyond the public confirmation of availability.

Source