GPT-5 Codex

high

Creator

OpenAI

Released

2025-09-23

Intelligence

44.6

Artificial Analysis Index

Coding

38.9

Artificial Analysis Index

In $/1M

$1.25

input tokens

Out $/1M

$10.00

output tokens

Blended $/1M

$3.44

3:1 blended

Speed

200

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
84
Humanity’s Last Exam
26
MMLU-Pro
87
SciCode
41
LiveCodeBench
84
MATH-500
AIME 2025
99
τ²-Bench (agentic)
87
Terminal-Bench Hard
38
IFBench
74
Via Artificial Analysis