GPT-5.6 Sol, Terra, and Luna are officially here — but the US government decides who gets to touch them. OpenAI dropped its next-generation model series Friday in a limited preview accessible only to partners pre-approved by the Trump administration, marking the first time Washington has preemptively gatekept an American AI launch. The flagship Sol is OpenAI's most capable model yet, with agentic upgrades in coding, biology, and cybersecurity and a new "ultra" mode that...