GPT-5.6 Is Here: Sol, Terra, and Luna

For twelve days, the best AI models on the planet existed and almost nobody could touch them. That ends now! GPT-5.6 Sol, Terra, and Luna go public today! The models are accessible by all users (no subscription required) This is the full breakdown of what’s on offer: three models, four prices, one precedent, and a capability table that should help you select the right model. Hands-on results follow the moment access opens. The Family vs GPT-5.5 at a Glance Hands-On: Five Tests, One RuleTest 1: Defender’s Audit (Sol, the cyber claim’s legitimate half)Test 2: The Root-Cause Hunt (Sol, Terminal-Bench claim)Test 3: GPT 5.5 Sol vs GPT-5.5, CodingTest 4: The GPT 5.6 Stress Test (the Sol sleeper claim)Test 5: The Contradiction Trap (Sol, High reasoning claim) Test 3: GPT 5.5 Sol vs GPT-5.5, Coding Test 4: The GPT 5.6 Stress Test (the Sol sleeper claim) GPT-5.6 retires OpenAI’s naming chaos for good. The number marks the generation. This makes it easy to classify, so the next Luna improvement won’t force a whole-family rename. Sol is the flagship, built for the hardest 10…