OpenAI shipped its best model and locked the door
OpenAI previewed GPT-5.6 in three sizes, Sol at the top, Terra in the middle, Luna for cheap volume. The catch is who gets in: roughly 20 organizations, each cleared by the US government before they can touch it. All three are rated high-risk for cyber and bio, so broad access waits weeks. For the first time the gap between a model existing and you being allowed to run it is a real delay shaped by regulators, not a signup form.