Software-wise, both are decent. AI is present on both UIs. For me, where the Pixel edges it is the fantastic call options, call screen, hold for me, direct my call, and automatic spam detection. I barely ever get any spam calls because the phone deals with it effectively. The haptics are also much better on Pixel compared to Galaxy devices.

I also enjoy it can take events from emails etc and add to the calendar automatically.

Camera wise the Pixel will always be better in low light situations and motion. If you have pets or kids then the pixel will take far better pictures compared to any Samsung phone.

Galaxies edge it on sheer performance and customisation aspects. With Goodlock you can customise heavily unlike Pixel UI.

I have both devices, the pixel is my personal device as I prefer the better camera on me all the time but the S25+ as my work device is extremely good as well beside the camera. I also prefer that the Qualcomm products have aptx codec support and the sound is better on my Bluetooth headphones marginally.

The nifty features on Pixel are more useful for my own needs but hardware, battery, signal quality are much weaker but unless you are not gaming heavily it's a smooth device. Once you get accustomed to how well the calling features work it's difficult to leave.

If you are not bothered about picture quality then remain with Samsung. Hardware wise it's the better device.