OpenAI · GPT series

GPT-6 Sol

Released 22 Sep 2026 · 19 days after GPT-6 Luna

notable release

Half the price of 5.6 Sol. No Terra this time.

Intelligence

44.2

#4 of 21 scored releases to that date

Price

$4.00

per 1M tokens, 3:1 in/out · $2 in / $10 out

Speed

—

not measured

Weights

Closed

US lab

OpenAI’s best score over time