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Grok 4.1 Fast Reasoning

Latest

xAI

Proprietary
# 30

Released

Nov 19, 2025

# 2

Context Length

2M

chart

Benchmarks

# 55

Code RankedAGI

62.3%

# 63

Agentic RankedAGI

48.2%

# 38

Code Arena

1234

# 13

LiveCodeBench v6

82.0%

# 66

Reason RankedAGI

55.2%

# 46

HLE

18.0%

# 34

GPQA Diamond

85.0%

# 18

Text Arena

1432

# 20

AIME 2025 I & II

89.0%

# 20

Vending Bench 2

$1,106.63

# 27

IF Evaluation

53.0%

# 20

MMMU Pro

53.0%

# 39

Math RankedAGI

72.1%

# 58

RAGI RankedAGI

55.0%

# 11

𝜏²-Bench Telecom

93.3%

coins

Pricing

# 13

Input Cost /M

$0.2

# 14

Output Cost /M

$0.5

# 9

Cached Cost /M

$0.05

sparkle-2

Additional Details

Last Updated

about 2 hours ago