GPT-5.1 Codex mini

high

Creator

OpenAI

Released

2025-11-13

Intelligence

38.6

Artificial Analysis Index

Coding

36.4

Artificial Analysis Index

In $/1M

$0.25

input tokens

Out $/1M

$2.00

output tokens

Blended $/1M

$0.69

3:1 blended

Speed

217

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
81
Humanity’s Last Exam
17
MMLU-Pro
82
SciCode
43
LiveCodeBench
84
MATH-500
AIME 2025
92
τ²-Bench (agentic)
63
Terminal-Bench Hard
33
IFBench
68
Via Artificial Analysis