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Grok 4.2

Latest

xAI

Proprietary
# 26

Released

Mar 31, 2026

# 2

Knowledge Cutoff

Sep 25

# 2

Context Length

2M

chart

Benchmarks

# 50

Code RankedAGI

66.7%

# 62

Agentic RankedAGI

56.4%

# 31

Code Arena

1387

# 28

Code Livebench

66.1%

# 15

AgenticCode LiveBench

43.3%

# 11

Svelte Bench

88.9%

# 41

Reason RankedAGI

68.7%

# 26

HLE

32.0%

# 12

GPQA Diamond

91.0%

# 7

Text Arena

1480

# 12

Vending Bench 2

$4,662.85

# 3

NYT Connections

90.3%

# 20

IF Evaluation

81.0%

# 13

MMMU Pro

75.0%

# 50

Math RankedAGI

71.1%

# 50

RAGI RankedAGI

60.6%

# 11

ARC AGI 2.0

53.3%

# 4

LiveCodeBench Pro

74.2%

# 6

𝜏²-Bench Telecom

96.5%

# 5

HealthBench Hard

20.3%

# 5

MedXpertQA Text

50.2%

# 4

MedXpertQA MM

65.8%

# 9

DeepSearch QA

62.8%

# 34

GDPval AA

1180

# 8

CharXiv Reasoning

60.9%

# 22

Code DesignArena

1269

coins

Pricing

# 37

Input Cost /M

$2

# 39

Output Cost /M

$6

# 21

Cached Cost /M

$0.2

sparkle-2

Additional Details

Model ID

x-ai/grok-4.20

Last Updated

23 days ago