I was a big fan of that model but it has been replaced in AI Studio by its preview version, which, by comparison, is pretty bad. I hope Google makes the release version much closer to the experimental one.
I can confirm the model name in Run Settings has been updated to "Gemini 2.5 Pro Preview ..." when it used to be "Gemini 2.5 Pro (Experimental) ...".
I cannot confirm if the quality is downgraded since I haven't had enough time with it. But if what you are saying is correct, I would be very sad. My big fear is the full-fat Gemini 2.5 Pro will be prohibitively expensive, but a dumbed down model (for the sake of cost) would also be saddening.
