We brought GPT-6 Sol and Luna to chat users this week! These very smart models bring two particularly exciting changes to the way chat interacts with you:

With intelligent UI, chat conjures up custom diagrams, layouts, or visualizations on the fly, near-instantly. This gives chat a truly new medium for communication with you and you'll find it can express itself and produce experiences in ways that simply were not possible before.

"Double texting" (as we call it) lets chat freely move between thinking, working, and talking, which means it now shares polished chunks of progress as it works, rather than making you wait until it is 100% finished. This feels natural and obvious in hindsight once you try it, and it means chat can get you an initial answer that you can start chewing on *sooner*, while also going even deeper than before while you process its initial take. It's a small conceptual change but we think a big usability improvement.

Bringing these models to the world requires a breathtaking amount of perseverance, technical focus, and physical stamina. Balancing the many goals we have for a model that over 1/8 humans use every week is a juggling act with very high stakes and the team handles it with impressive grace, especially in the face of such deep changes to training and model behavior as in GPT-6.

Push these models to their limits and tell us what you find! We're excited to hear from you.