OpenAI picked efficient GPT-6 Sol/Luna to save compute for a larger Astra successor, post speculates

Haider. @haider1Originally posted 2026.09.25

Open original on X

openai clearly chose efficient models like gpt-6 sol/luna to free up data center capacity for bigger models we know they have a larger model than astra that they'll eventually release but opus 5.5 using 4x more output tokens is eye-opening. if API price roughly reflects model size, that could mean up to 8x more compute at those benchmark scores