OpenAI Unveils GPT-5.6, New ChatGPT Desktop App

OpenAI is introducing the next chapter for ChatGPT today. The company is releasing new models and an upgraded desktop app. This includes a new ChatGPT Work agent, an upgraded ChatGPT desktop app with Codex, and a new hosted sites service. OpenAI is also releasing GPT-5.6 today. This follows their announcement in June of three new models: Sol, Terra, and Luna. Sol is OpenAI's flagship model, Terra is a balanced model for everyday work, and Luna is a fast and affordable model. The new models are rolling out over the next 24 hours. GPT-5.6 also includes a new 'ultra' acceleration mode for demanding work. OpenAI states that GPT-5.6 Sol sets a new standard for intelligence and efficiency, performing well in coding, knowledge work, cybersecurity, and science. It also delivers a step change in design judgment. These updates offer users clearer choices across intelligence, speed, and cost.