GPT-5.5

Non-reasoning

Creator

OpenAI

Released

2026-04-23

Intelligence

40.9

Artificial Analysis Index

Coding

48.6

Artificial Analysis Index

In $/1M

$5.00

input tokens

Out $/1M

$30.00

output tokens

Blended $/1M

$11.25

3:1 blended

Speed

57

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
77
Humanity’s Last Exam
13
MMLU-Pro
SciCode
47
LiveCodeBench
MATH-500
AIME 2025
τ²-Bench (agentic)
69
Terminal-Bench Hard
49
IFBench
46
Via Artificial Analysis