ChatGPT 5.6 Is Live: Sol, Terra, and Luna Explained
OpenAI began the broad public rollout of GPT-5.6 on July 9, 2026, two weeks after the model first shipped as a locked-down preview to roughly 20 US-government-vetted organizations. The launch comes after the US Commerce Department’s Center for AI Standards and Innovation completed its review and cleared wider access to the three models in the family, Sol, Terra, and Luna. If you have been searching whether ChatGPT 5.6 is out, the short answer is that access is finally opening up beyond the trusted-partner wall. This article covers everything that matters about the GPT-5.6 release, what each of the three tiers is built for, how much they cost, the benchmark numbers […]
