OpenAI · GPT series

GPT-6 Astra

Released 3 Sep 2026 · 56 days after GPT-5.6 Terra

a new all-time high across the nine labsnotable release

New generation; +5.2 index in 8 weeks.

Intelligence

56.9

#1 of 17 scored releases to that date

Price

$20.00

per 1M tokens, 3:1 in/out · $10 in / $50 out

Speed

output tokens/s, median

Weights

Closed

US lab

OpenAI’s best score over time