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Model Retirement Announcement

xAI retires grok-4-1-fast and grok-4 on 15 May 2026, redirecting traffic to grok-4.3.

May 15 · 02:00:00 · primary fetch1 sourceupdated May 15 · 02:00:00

xAI is retiring several older models, including grok-4-1-fast and grok-4, on May 15, 2026, with traffic redirecting to the current standard model, grok-4.3.

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x.aiModel Retirement Announcementprimary02:00:00