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Grok 4.2

Latest

xAI

Proprietary
# 15

Released

Mar 31, 2026

# 2

Knowledge Cutoff

Sep 25

# 2

Context Length

2M

chart

Benchmarks

# 34

Code RankedAGI

70.0%

# 37

Agentic RankedAGI

60.1%

# 24

Code Arena

1402

# 27

Code Livebench

66.1%

# 15

AgenticCode LiveBench

43.3%

# 10

Svelte Bench

88.9%

# 30

Reason RankedAGI

69.6%

# 22

HLE

32.0%

# 11

GPQA Diamond

91.0%

# 5

Text Arena

1480

# 12

Vending Bench 2

$4,662.85

# 3

NYT Connections

90.3%

# 23

IF Evaluation

81.0%

# 13

MMMU Pro

75.0%

# 37

Math RankedAGI

72.3%

# 33

RAGI RankedAGI

62.3%

# 11

ARC AGI 2.0

53.3%

# 4

LiveCodeBench Pro

74.2%

# 6

𝜏²-Bench Telecom

96.5%

# 7

HealthBench Hard

20.3%

# 5

MedXpertQA Text

50.2%

# 4

MedXpertQA MM

65.8%

# 9

DeepSearch QA

62.8%

# 32

GDPval AA

1180

# 8

CharXiv Reasoning

60.9%

# 17

Code DesignArena

1274

coins

Pricing

# 37

Input Cost /M

$2

# 38

Output Cost /M

$6

# 19

Cached Cost /M

$0.2

sparkle-2

Additional Details

Model ID

x-ai/grok-4.20

Last Updated

20 days ago