On 26 August 2026, xAI published on its news site:
Today, we’re excited to announce that Grok 4.6 is now available on Microsoft Foundry.
The same page called Grok 4.6 the latest flagship model, “built for long-running agents and ambitious interactive and visual work.”
What was announced
From x.ai/news/grok-4-6-microsoft-foundry:
- Grok 4.6 is available via Microsoft Foundry
- Context window stated as 500k
- Configurable reasoning efforts: low, medium, high, xhigh
- Foundry is described as a place to evaluate Grok 4.6 against other models, run workload-specific tests, deploy managed endpoints, and operate with enterprise security and governance controls
The page also points to the earlier Grok 4.6 model announcement.
Context
Elon Musk later posted that Grok is in Microsoft Foundry. This article reports the xAI news page, not that X post.
Limits of this report
No independent review of Foundry pricing, regions, or how Grok 4.6 compares on Foundry benchmarks is included. Those details were not on the news page.
Source
Grok 4.6 on Microsoft Foundry, x.ai news, 26 August 2026.