grok-code-fast-1

grok-code-fast-1 (xAI) was retired on May 15, 2026; calls are now answered by grok-build-0.1 instead of failing.

Provider

xAI

Shutdown

May 15, 2026, calls now go to grok-build-0.1

Announced

—

Replace with

grok-build-0.1

Also written as

grok-code-fast, grok-code-fast-1-0825, xai/grok-code-fast-1

• xAI 'retired' this slug but requests are auto-redirected (not rejected): calls succeed, served by grok-build-0.1 and billed at its price. Flag as retired-with-redirect, not as a hard failure.
• Effective 12:00 PM PT on 2026-05-15.

Source: https://docs.x.ai/developers/migration/may-15-retirement · report a wrong date