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dyauspitr 5 hours ago

Wtf is GPT-6 Sol, I though GPT-6 is Astra?

Readerium 5 hours ago | parent | next [-]

Number is generation Name is the size (Luna smallest to Astra largest)

dyauspitr 5 hours ago | parent [-]

Then what is Astra high-extra high-Ultra? That’s effort within each tier?

Readerium 5 hours ago | parent | next [-]

Yes that is number of reasoning tokens used.

Performance increases both with larger model (Luna vs Sol)

And with more reasoning (low vs xhigh)

MaKey 5 hours ago | parent | prev [-]

Exactly

ssl-3 an hour ago | parent | prev | next [-]

It's just another step on the timeline.

GPT-5.6-Sol, GPT-5.6-Terra, and GPT-5.6-Luna were released in July of 2026.

The first release from the GPT-6 series was GPT-6-Astra. GPT-6-Astra happened on around September 3, 2026, and the previously-mentioned GPT-5.6-* widgets remained available.

Today, September 22, 2026, we now also have GPT-6-Sol and GPT-6-Luna added into the mix.

As I write this, all of the model identifiers I've mentioned are available to select for use within Codex.

hersko 3 hours ago | parent | prev [-]

Just released 6-Sol and 6-luna a few hours ago