Physix Frontier · News Briefing Card (IT Home · Sep 14, 2026)

Microsoft Adds xAI's Grok to Office Copilot

KEY FACTS

Microsoft has integrated xAI's Grok model into Copilot for Word, Excel, and PowerPoint.
The feature is in limited preview and is not yet available to customers in the EU, EFTA, or UK.
Enterprise IT administrators must manually enable subprocessor options to allow data processing by xAI.
Microsoft has not disclosed the specific Grok version, though its latest flagship is Grok 4.6.
This move continues Microsoft's strategy of breaking OpenAI's exclusivity by introducing multi-model support.

PHYSIX OBSERVATION

Microsoft is accelerating its 'model marketplace' build-out to reduce single-point dependency on OpenAI, but Grok's exclusion from European markets due to cross-border data compliance issues highlights the hard constraints geopolitics places on AI deployment. For enterprises, increased choice comes with rising management complexity, requiring vigilance against data sovereignty risks posed by third-party models. Whether Chinese large models can break similar barriers to enter the global office ecosystem will be a key indicator of the competitive landscape in AI globalization.

Source: IT Home report