[josalhor]

I think this is 3.1 (3.0 Pro with the RL improv of 3.0 Flash). But they probably decided to market it as Deep Think because why not charge more for it.

[WarmWash]

The Deep Think moniker is for parallel compute models though, not long CoT like pro models.

It's possible though that deep think 3 is running 3.1 models under the hood.