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OpenAI's GPT family of generative pre-trained transformer language models, offered in multiple model generations and variants.

Pricing

Official site · Sep 1, 2026, 1:07 PM
Input / 1M
$5.00
Output / 1M
$30.00
Cached input / 1M
$0.50

Standard processing rates; page notes these rates apply to context lengths under 270K.

OpenAI’s official API pricing page lists GPT-5.6 Sol as a flagship GPT model and explicitly states its standard text token rates.

View source

Model Intelligence

Arena ranking
17
Benchmarkable
No
Model level
family
Intelligence Index
17.3
Math Index
31.7
MMLU Pro
0.81
GPQA
0.67
HLE
0.06
LiveCodeBench
0.56
SciCode
0.39
MATH-500
0.86
AIME
0.37
AIME 2025
0.32
IFBench
0.46
LCR
0.27
TerminalBench Hard
0.18
TAU2
0.67

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