GPT-5.6 Sol: OpenAI's New Flagship AI Model Released

OpenAI is launching its new GPT-5.6 family of models for general availability. This includes Sol, their new flagship model, along with Terra and Luna. Here's the thing: GPT-5.6 Sol sets a new standard for intelligence and efficiency. It achieves top results in coding, knowledge work, cybersecurity, and science. What's interesting is it outperforms previous models with fewer tokens and at a lower estimated cost. This means stronger performance for the money. They also introduce "ultra," a new high-capability setting that coordinates multiple agents for complex tasks. GPT-5.6 Sol scored 53.6 on the Agents’ Last Exam, beating a competitor by 13.1 points. Even at medium reasoning, it beats that competitor by 11.4 points at about one-quarter the estimated cost. The smaller models, Terra and Luna, also outperform a competitor at around one-sixteenth the cost. The bottom line: These new models aim to make advanced intelligence more abundant and affordable.