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xAI · First-party API · LLM

grok-code-fast-1

RetiredRetired on May 15, 2026Published in PT; starts May 15, 08:00 AM UTC

xAI has retired grok-code-fast-1 (May 15, 2026). Source: docs.x.ai · Last checked Oct 15, 2026

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Notice

Retired

Retired on May 15, 2026

Published in PT; starts May 15, 08:00 AM UTC

xAI documents this retired. from the xAI API.

Hosting route
First-party API
Affected scope
from the xAI API
Replacement
None published
Announced
May 15, 2026
First seen by ModelClock
Oct 11, 2026

What the provider published

docs.x.ai ↗

As we continue advancing Grok, we are retiring several earlier models to focus fully on our newest generation. Effective May 15, 2026 at 12:00 PM PT , the following models will be retired from the xAI API:

  • grok-4-0709

  • grok-code-fast-1

Read from the provider's text and verified a second time against the quoted lines.

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