OnlySOTA

Grok 4 Fast

SpaceXAI closed 2025-09-19

Legacy

Killed

Grok 4 Fast is killed. The executioner, Claude Haiku 5.5, costs $0.20 and scores 43.4: no more expensive, no weaker. Choosing Grok 4 Fast means paying more for nothing.

Score
17.9 est.
Artificial Analysis Intelligence Index
Best rank
#141
Arena — Code
Price
$0.28
Blended Price, USD per 1M tokens (3:1 input:output)

No longer listed as current by its source, so this page shows only the verdict and its scores.

Scores on each board

Compare with the executioner, Claude Haiku 5.5 → See the current SOTA models →

Details
Family
Grok → Grok 4
Blended Price, USD per 1M tokens (3:1 input:output)
$0.28
Sources
3 boards ·4 scores ·2 settings
Also written as
Grok 4 Fastgrok-4-fast