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Grok Model Retirement on May 15, 2026
xAI retires several Grok models on May 15, 2026, including Grok 4 variants and Grok-code-fast-1, with traffic automatically redirected to Grok 4.3.
xAI is retiring several older models on May 15, 2026, including various versions of Grok 4 and Grok-code-fast-1, with requests automatically redirecting to Grok 4.3.
§ sources1 publication · timeline below