OpenAI Releases GPT-5.6 Models with Restricted Government-Requested Access

OpenAI has initiated a limited preview of its new GPT-5.6 AI models, including Sol, Terra, and Luna, exclusively for select US government partners. This restricted access is reportedly at the government's request to evaluate the models and establish a vetting framework. OpenAI has expressed dissatisfaction with this limitation, arguing it hinders broader access to beneficial AI tools.