GPT-5.5

xhigh

Creator

OpenAI

Released

2026-04-23

Intelligence

60.2

Artificial Analysis Index

Coding

59.1

Artificial Analysis Index

In $/1M

$5.00

input tokens

Out $/1M

$30.00

output tokens

Blended $/1M

$11.25

3:1 blended

Speed

63

tokens / sec

Benchmark breakdown

Independent evaluation scores, normalized to 0–100.

GPQA Diamond
94
Humanity’s Last Exam
44
MMLU-Pro
SciCode
56
LiveCodeBench
MATH-500
AIME 2025
τ²-Bench (agentic)
94
Terminal-Bench Hard
61
IFBench
76
Via Artificial Analysis