Grok 4 Fast
The Grok line
3 releases in the Grok line.
A newer release is out: Grok 4.1 Fast (Reasoning).
Epoch benchmark boards
Best result on each board it has run. The tick marks the leader.
Fiction.LiveBench94%#4 of 58
DTBench83%#71 of 179
Cybench30%#10 of 22
WeirdML43%#75 of 141
ARC-AGI48%#64 of 107
ARC-AGI-25%#66 of 103
xAI's past year
19 release days in the past year, about one every 19 days. The next is expected around Nov 10, 2026. Forecasts ↗
NovDecJanFebMarAprMayJunJulAugSepOctNov
This release is tracked directly from its lab. Open the announcement for access and availability.