← Artificial Acceleration
OpenAI · GPT series

GPT-5.6 Sol

Released 9 Jul 2026 · 0 days after GPT-5.6 Luna
notable release

Named tiers arrive: Sol / Terra / Luna.

Intelligence
—
no index score yet
Price
$8.00
per 1M tokens, 3:1 in/out · $4 in / $20 out
Speed
—
not measured
Weights
Closed
US lab

OpenAI’s best score over time

9 Jul 202626 Oct 2026
← previous from OpenAIGPT-5.6 Luna