product · fact
Grok 4.1 Fast retirement
As of November 4, 2026, the AsOf record says Grok 4.1 Fast was retired on May 15, 2026 (as grok-4-1-fast-reasoning), from a primary source (docs.x.ai). The record holds 1 claim on Grok 4.1 Fast's retirement, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.
- current retirement
- grok-4-1-fast-reasoning
Every dated value
| value | valid from | valid to | status | conf | sources | claim |
|---|---|---|---|---|---|---|
| grok-4-1-fast-reasoning | 2026-05-15 | valid | 1 source for retirement grok-4-1-fast-reasoning | clm_53450A803B87 |
Questions this record answers
- When was Grok 4.1 Fast retired?