GPT-5.5

low

Creator

OpenAI

Released

2026-04-23

Intelligence

50.8

Artificial Analysis Index

Coding

52.1

Artificial Analysis Index

In $/1M

$5.00

input tokens

Out $/1M

$30.00

output tokens

Blended $/1M

$11.25

3:1 blended

Speed

60

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
91
Humanity’s Last Exam
31
MMLU-Pro
SciCode
52
LiveCodeBench
MATH-500
AIME 2025
τ²-Bench (agentic)
84
Terminal-Bench Hard
52
IFBench
64
Via Artificial Analysis