Grok 4 Fast

Non-reasoning

Creator

xAI

Released

2025-09-19

Intelligence

23.1

Artificial Analysis Index

Coding

19.0

Artificial Analysis Index

In $/1M

$0.20

input tokens

Out $/1M

$0.50

output tokens

Blended $/1M

$0.28

3:1 blended

Speed

0

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
61
Humanity’s Last Exam
5
MMLU-Pro
73
SciCode
33
LiveCodeBench
40
MATH-500
AIME 2025
41
τ²-Bench (agentic)
64
Terminal-Bench Hard
12
IFBench
38
Via Artificial Analysis