product

Grok 4.1 Fast

Name: Grok 4.1 Fast on the AsOf record
License: https://creativecommons.org/licenses/by/4.0/

Tool-calling model by xAI, 2M context. 2 claims on record, 2 currently valid, 0 superseded, plus 1 post. Last change 2026-05-15.

State as of 2026-11-04

1 asserted claim

fact	value	valid from	conf	sources
context window	2M 2025-11-19 · conf 0.95primary, 1 source for context window	2025-11-19	0.95	primary, 1 source for context window

2 dated events · full timeline →

2026-05-15 · retiredretired

grok-4-1-fast-reasoning1 src

valid

2025-11-19 · model releasemodel release

Grok 4.1 Fast1 src

valid

0 changes · superseded claims stay visible

No changes since 2026-05-08.