OpenAI to Release GPT-5.6 Sol, Terra, and Luna to the Public on July 9

My take: After weeks of limited access to roughly 20 partners selected by the US government, the Department of Commerce gave the green light: GPT-5.6 Sol, Terra, and Luna will be available to everyone on July 9.

What stands out to me is the three-tier structure: Sol for high-complexity work, Terra for everyday use, and Luna for volume and speed at $1 per million input tokens. For the first time with this family, you can assign the right level of intelligence to each type of task without paying for capacity you don't need. As for the benchmarks OpenAI has published, it's worth reading them with a critical eye: when the company building the model also designs and runs its own tests, the numbers have value but deserve independent verification before being taken as definitive.

If you're already using OpenAI models in your work or business, this week is a good time to review which tasks justify the most expensive tier and which ones you can handle just as well with the most affordable option.