Samsung - Galaxy S25 Ultra vs Samsung - Galaxy S26 Ultra

These two are nearly even on the Mars Score (73.3 vs 74.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the Galaxy S25 Ultra if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight. The single most decisive one: Weight — 14.00 g less. 218 vs 232.

Pick the Galaxy S26 Ultra if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wired charging, ram, antutu. The single most decisive one: Wired charging — 44.44% more. 65 W vs 45 W.

Both ship with comparable battery capacity, main camera, screen size, so those specs do not separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.