#OpenAI

GPT-5.6 Arrives: OpenAI's New Model Family Bets Big on Efficiency and Agentic Power

OpenAI's GPT-5.6 family—Sol, Terra, and Luna—is now generally available, bringing a new multi-agent "ultra" mode, sharper design judgment, and a heavy focus on performance-per-dollar across coding, knowledge work, and cybersecurity tasks.