05:00
2026-05-20
dev.to
artificial-intelligence
xAI retired 8 Grok models on May 15 — the slugs still resolve, so your bill and output quality changed silently
On May 15, 2026, xAI retired eight Grok API model slugs, including popular ones like `grok-code-fast-1` and `grok-4-fast-reasoning`, but the slugs continue to resolve without breaking code, meaning re…