OpenAI
GPT-6 Sol and Luna
Announced Sep 22, 2026
GPT-6 at different cost levels
01
What could it do?
OpenAI expanded GPT-6 with Sol and Luna.
02
What changed?
Added different balances of intelligence and cost.
WHY IT MATTERED
Broadened options for everyday and high volume work.
03
Where it fell short
This is a joint announcement, not one scored model.
Sources checked Oct 7, 2026
Release facts were checked against the sources below. Performance claims belong to the developers; we have not independently tested these models.
Developer announcement or release logBenchmark results
No comparable ECI score is available for this release in our source snapshot. Missing scores are never estimated.