I briefly owned a 2024 Denali last year. Couple things to compare the two. Ram has nicer power running boards they’re wider so you don’t have to side step on them however, the Denali has a cool feature that allows the running board to move back to the bed for easy bed access. The Denali has more physical buttons which I prefer but ram has the best center console area on the market in my opinion. The Denali has no sunglass holder… small criticism I know, but it’s an 80k truck. The Denali has the best tailgate in the industry in my opinion. However the Denali isn’t very apple carplay or android auto friendly only allowing half the screen to be used so if you want full screen navigation you have to use google maps that’s baked in, but it requires WiFi so once your subscription runs out in 3 years you have to pay for full screen navigation. Also the cherry on top and the reason I am not in the market for a Denali anymore is they really cheaped out on the camera system it’s good during the day but at night it’s literally unusable. Only thing I will miss is the 30mpg I got with the diesel.
Also for the same money for a 2025 ram limited you get heat and cooled rear seats, air suspension , massage seats, full self driving, park assist, passenger screen, smart phone as a key, ram boxes and a 33 gallon tank. Everything I just mentioned are not offered on the Denali and the only feature GMC offers that I mentioned is massage seats and full self driving but you have to pay an extra 10k for that and upgrade to the Denali ultimate.