Grok 4.1 Fast (Reasoning)

Release Date: 11/19/2025

Benchmarked by Vals Logo
Vals Index

Avg. Accuracy

55.14%

Latency

250.82s

Cost (In/Out)

0.2 / 0.5

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

Vals Index

0.0%

18/ 28

CaseLaw (v2)

0.0%

24/ 63

CorpFin

0.0%

7/ 82

MortgageTax

0.0%

51/ 58

ProofBench

0.0%

13/ 15

SAGE

0.0%

27/ 37

TaxEval (v2)

0.0%

22/ 91

Vibe Code Bench

0.0%

15/ 16

AIME

0.0%

12/ 82

GPQA

0.0%

11/ 85

IOI

0.0%

34/ 43

LiveCodeBench

0.0%

22/ 90

LegalBench

0.0%

25/ 104

MedQA

0.0%

31/ 90

MGSM

0.0%

47/ 75

MMLU Pro

0.0%

21/ 84

MMMU

0.0%

26/ 55

SWE-bench

0.0%

30/ 50

Terminal-Bench

0.0%

33/ 47

Academic Benchmarks
Proprietary Benchmarks (contact us to get access)

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