Grok 4.1 Fast (Reasoning)

Release Date: 11/19/2025

Vals Index

Accuracy (Vals Index)

49.73% ± 1.95

Latency (Vals Index)

152.70s

Cost/Test (Vals Index)

$0.03

Context Window

2M

Max Output Tokens

2M

Input Modality

Hyperparameter settings
Default Provider : xAI

Temperature

0.7

Top P

0.95

Top K

Default

Max Output Tokens

2,000,000

Benchmarks

Accuracy

Rankings

0.0%

± 1.95
32/ 39

0.0%

± 1.51
25/ 27

0.0%

± 0.81
20/ 46

0.0%

± 0.93
7/ 96

0.0%

± 2.81
17/ 44

0.0%

± 1.99
47/ 50

0.0%

± 1.87
19/ 50

0.0%

± 0.95
61/ 68

0.0%

± 1.97
20/ 23

0.0%

± 3.02
37/ 48

0.0%

± 0.87
27/ 103

0.0%

± 1.20
24/ 25

0.0%

± 0.58
20/ 95

0.0%

± 1.85
20/ 98

0.0%

± 1.75
41/ 50

0.0%

± 1.09
32/ 102

0.0%

± 0.46
34/ 116

0.0%

± 0.25
35/ 95

0.0%

± 0.36
30/ 96

0.0%

± 1.07
35/ 65

0.0%

± 2.20
37/ 40

0.0%

± 4.60
37/ 51
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