OpenAI Opens GPT-5.6 to All, Shows ~1,000-Line Code Built in One Pass

OpenAI made its newest model family, GPT-5.6, publicly available on July 9, 2026. The company showcased its top-tier "Sol" completing a complex coding task spanning nearly 1,000 lines from start to finish without repeated prompting or hand-holding, putting autonomous code generation front and center.