GPT-6 Sol spotted in API, possibly the lightweight model

Astro Polo @astropol0Originally posted 2026.09.11

Open original on X

So OpenAI is about to give people a way to stop burning Astra quota on every task... GPT-6 Sol just got spotted in the API as Astra was the heavy one Sol might be the fast one... same naming as 5.6 Sol / Terra / Luna except this time the flagship already shipped and the cheaper sibling is leaking after...

This post quotes another post: “User shares screenshot said to show GPT-6 Sol”