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grok-4-20-reasoning (1) retirement date and replacement

Microsoft Foundry · Model · retires Apr 6, 2027 (in 6 months)Unverified

Vendor page

Dates

Checked Sep 25, 2026 on Microsoft's page
RetiresApr 6, 2027 (in 6 months)
ReplacementNone named
Model makerxAI
NoticeRetirement date; xAI
Sourcelearn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule

Changes

DateChange
Sep 25Announced2027-04-06UnverifiedRetirement date; xAISource

Around the same time on Microsoft Foundry

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