[zvitiate]

Google actually switched to an OpenAI system for 2.5 Pro's Chain-of-Thought yesterday on the Gemini app and AI Studio ("I did this; I did that. etc"). Apparently it still shows via API, but no clear how long. Also, in my experience, if you select the "Canvas" output, you still get the old style CoT.

And yes, the above is true even if you are ULTRA.

You can still view your old thinking traces from prior turns and conversations.

[zoogeny]

My heart just broke to hear this. Although I honestly don't read the thinking output very often. But I had been cheekily copy-n-pasting the info for my own records.

[knowsuchagency]

I agree, but there's always Deepseek. They're publishing and open-sourcing more than anyone these days.