Galaxy S25 Ultra VS Xiaomi 15 Ultra

The Galaxy S25 Ultra comes out ahead overall, scoring 94 to the Xiaomi 15 Ultra's 92. Priced at $1299 against $1499, the choice between them is as much about budget as specs, and each phone leans toward a slightly different buyer.

For raw speed the Galaxy S25 Ultra takes the lead, with an AnTuTu score of 3,122,734 against 2,950,000, driven by its Snapdragon 8 Elite. Both feel quick in everyday use, but the gap shows up in demanding games and heavy multitasking where the faster chip pulls ahead.

The Galaxy S25 Ultra pairs a 200MP main camera with 5x optical zoom and a 12MP front sensor. The Xiaomi 15 Ultra answers with 50MP, 4.3x zoom and a 32MP selfie camera. The Galaxy S25 Ultra reaches further with its longer optical zoom, which helps for portraits and distant subjects.

Battery favours the Xiaomi 15 Ultra, with a 5410mAh cell against 5000mAh. For refills the Xiaomi 15 Ultra is quickest at 90W, spending less time tied to a charger.

Both use high refresh rate OLED screens. The Galaxy S25 Ultra measures 6.9" and peaks at 2600 nits, while the Xiaomi 15 Ultra is 6.73" and reaches 3200 nits. Screen size and outright brightness are where they separate most.

Overall the Xiaomi 15 Ultra is the one we would steer most buyers toward. Consider the Galaxy S25 Ultra instead if camera versatility matters more to you.