OpenAI's GPT‑5.6 models are here, with a trio of options balancing power and performance

Last month, OpenAI gave us a little preview of what to expect from its next big AI model launch, detailing plans for the three faces of GPT-5.6: Sol, Terra, and Luna. Rather than going one-size-fits-all, the three models are each tuned for specific usage demands, prioritizing maximum performance, or trying to get the most bang out of your AI buck. And today, all three are finally making their formal debut, ready for you to begin using them across ChatGPT and Codex.

GPT‑5.6 Sol is the heavy hitter, and this is the one that you’re going to want to turn to for tasks like coding, or researching cybersecurity vulnerabilities. When you need more power still, OpenAI is introducing a new “ultra” setting that allows you to deploy multiple agents in parallel for even higher performance.

Beyond just being great at analytical tasks, OpenAI claims that GPT-5.6 also particularly excels when it comes to creative applications, and offers “a step change in design judgment” over past models. And just like we’ve seen Google recently prioritizing for Gemini, that extends to creating interactive visualizations to help you easily understand even complex topics.

Even if you just need a few simple graphs to share data during a presentation, GPT-5.6 is ready to help with some of its cleanest, most professional-looking output yet.

There’s also the possibility for GPT-5.6 to itself speed up development of future GPT models. OpenAI says that GPT-5.6 is having the biggest impact yet when used by its own developers, potentially enabling even more impressive results from the next models being cooked up.

Everybody’s concerned about using advanced AI models to discover software vulnerabilities and develop exploits for them, after Anthropic’s Fable 5 made headlines last month. OpenAI is very aware of this, and goes to some length detailing the steps it’s taken to erect safeguards designed for limiting GPT-5.6’s potential to be misused. Compared to past efforts, OpenAI says the measures present in GPT-5.6 block ten times as much nefarious activity.

Sol is obviously the star of the show here (no pun intended), but the GPT-5.6 family also includes Terra, an option with performance roughly on par with the existing GPT-5.5. Finally, there’s the lightweight Luna, for when speed of output and cost savings are your top priority.

Access to the new models begins today, with Sol arriving for Plus, Pro, Business, and Enterprise users, and Free and Go users instead able to get their hands on GPT‑5.6 Terra.