OpenAI just dropped its most capable AI models yet, and for a brief moment, the US government got to decide who could use them. That experiment in gated access is now ending, with the company preparing to open GPT-5.6 to the general public after an unusual preview period shaped by Trump administration input.
The GPT-5.6 family, which includes three variants called Sol, Terra, and Luna, debuted on June 26 with access limited to roughly 20 trusted partners. A full public release is expected around July 9.
What the models actually do, and what they cost
Sol is the flagship of the trio, and it carries flagship pricing to match. During the preview phase, it runs $5 per million input tokens and $30 per million output tokens.
The three models arrive with enhanced reasoning capabilities, updated safety testing against misuse scenarios, and stronger cybersecurity safeguards. OpenAI has framed this release as a step forward in responsible AI development, though the company was also quick to note that government-influenced access restrictions shouldn’t become the norm.
