Today OpenAI is previewing GPT-5.6 Sol, its newest flagship model for developers and enterprises, alongside Terra and Luna. [image] Sol is built for frontier reasoning and long-horizon agentic work; Terra is a balanced everyday model with GPT-5.5-competitive performance at 2x lower cost; and Luna…

Superapp with super models? Let’s go!

@here Join the livestream. https://openai.com/live/

Interesting that the new model announcement is a sideshow to product announcements.

Extracted API notes Models: gpt-5.6 → gpt-5.6-sol; also gpt-5.6-terra for cost/perf, gpt-5.6-luna for high-volume efficiency. Reasoning effort: none | low | medium | high | xhigh | max; benchmark current setting and one level lower. Pro mode: use reasoning.mode: "pro"; not a separate model s…

Looks like the token price of Sol is identical to 5.5. It’s nice to see a lack of an increase. :tada::rose: It’s also worth noting I see all the new models in the latest version of Codex CLI (0.144.0), nice! I had expected not to see them as based in UK and feared they might be a US exclusive. A…

[IMG_4628] Well now I have finally access to 5.6 Sol:tada:

Yay! All the new models work in Norway!

One shot, 5.6 Sol on Ultra: propose a free online dataset that would benefit from a cool 3D animated visualisation and create a deno base webGL 3D animated visualisation to demonstrate it. add some parameter controls suitable to the dataset. allow the user to drag rotate and mouse zoom [image] …

Now see if it can tie it to sun activity and discover something new! Haha. :wink: (Just saying as I did one like that here somewhere… one of Jay’s threads maybe? In any case, how long did it take?

GPT-5.6 Vision All 5.6 models are default "detail": "original". There is no smaller token limit on luna, unlike prior mini, for example. That means if you don’t specify “detail”:“high”, up to 6000 tokens billed. OpenAI isn’t committing to any promise of the size in billing when you do send a detail…

Introducing GPT-5.6 series: Sol, Terra and Luna. Coming July 9 10am PT

Announcements

LarisaHaster July 9, 2026, 6:42pm 45

Well now I have finally access to 5.6 Sol

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Introducing GPT-5.6 series: Sol, Terra and Luna. Coming July 9 10am PT

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