OpenAI is limiting its GPT-5.6 lineup (Sol, Terra, Luna) to a small group of trusted partners at the U.S.
The GPT-5.6 generation comes in three sizes.
This did not happen in isolation.
OpenAI is selling Sol on capability and on safety at the same time.
GPT-5.6 lands with tiered pricing.
Read the complete breakdown, fixes and what happens next.