By skyforbes I asked Gemini-CLI to solve a simple bug that 2.5 Pro had solved many times before. My instructions had a suggestion that was not 100% correct but the solution was a 1 line fix. Pro 3 thought a long time and started by suggesting to install the package uuid. I stopped it there.
I used /model to switch back to 2.5 Pro and it quickly did the 1 line fix correcting me on my suggestion. (I really liked how 3 Pro overhauled my landing page but that is another story.)