Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra
Head-to-head specifications
| Metric | Xiaomi 15 Ultra | Samsung Galaxy S25 Ultra | Difference |
|---|---|---|---|
| AnTuTu v10 score | 2,758,993 | 2,800,202 | -1.5% |
| Chipset | Snapdragon 8 Elite | Snapdragon 8 Elite | — |
| Display | 6.7" 120 Hz | 6.9" 120 Hz | — |
| Battery (mAh) | 600 | 5,000 | -88.0% |
| Rear cameras | 50+200+50+50 MP | 200+50+50+12 MP | — |
| Front camera (MP) | 32 | 12 | — |
| RAM / storage (base) | 12 GB / 256 GB | 12 GB / 256 GB | — |
| Max configuration | 16 GB / 1024 GB | 16 GB / 1024 GB | — |
| Weight (g) | 225 | 219 | +2.7% |
| Connectivity / unlock | 5G · Under-display | 5G · Under-display | — |
| Launch price (USD) | $1,299–$1,549 | $1,299–$1,649 | — |
- Samsung Galaxy S25 Ultra leads on raw performance by about 1% on AnTuTu v10 (Snapdragon 8 Elite vs Snapdragon 8 Elite).
- Xiaomi 15 Ultra is the cheaper option at launch pricing.
Verdict: Xiaomi 15 Ultra or Galaxy S25 Ultra?
Xiaomi 15 Ultra advantages
- No decisive advantage on the tracked metrics.
Samsung Galaxy S25 Ultra advantages
- Battery capacity (+88%)
Which should you choose?
- Choose the Samsung Galaxy S25 Ultra if you need all-day (or two-day) battery life.
Value for money
Samsung Galaxy S25 Ultra delivers more performance per dollar, making it the better value of the two at their listed prices.
Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: which should you choose?
Xiaomi 15 Ultra — Xiaomi Android 15 smartphone (2025) with a 6.73-inch 120 Hz LTPO AMOLED, Snapdragon 8 Elite, 600 mAh battery and 200MP main camera, scoring about 2,758,993 on AnTuTu v10; launched at $1,299.
Samsung Galaxy S25 Ultra — Samsung Android 15 smartphone (2025) with a 6.9-inch 120 Hz Dynamic AMOLED 2X, Snapdragon 8 Elite, 5000 mAh battery and 200MP main camera, scoring about 2,800,202 on AnTuTu v10; launched at $1,299.
Xiaomi 15 Ultra vs Samsung Galaxy S25 Ultra: Samsung Galaxy S25 Ultra is the faster phone. Samsung Galaxy S25 Ultra leads on raw performance by about 1% on AnTuTu v10 (Snapdragon 8 Elite vs Snapdragon 8 Elite). Xiaomi 15 Ultra is the cheaper option at launch pricing.
Performance and everyday use
The Samsung Galaxy S25 Ultra is the faster device on raw benchmarks (2,800,202 vs 2,758,993 on AnTuTu v10), running the Snapdragon 8 Elite against the Snapdragon 8 Elite. For messaging, browsing and social apps both feel instant — the gap matters most for gaming and long-term headroom.
Display and battery
Xiaomi 15 Ultra carries a 6.7-inch 120 Hz LTPO AMOLED against a 6.9-inch 120 Hz Dynamic AMOLED 2X on the Samsung Galaxy S25 Ultra. Batteries are 600 and 5,000 mAh — though software tuning and chipset efficiency shape real-world endurance as much as capacity.
Cameras, storage and price
Rear arrays are 50+200+50+50 MP versus 200+50+50+12 MP, with 32 MP and 12 MP front cameras. Base configurations start at 12 GB / 256 GB and 12 GB / 256 GB. The Xiaomi 15 Ultra is the more affordable at about $1,299 launch price, which may matter more than a small spec gap.
The verdict
Both are credible choices in the smartphone comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the Xiaomi 15 Ultra better than the Samsung Galaxy S25 Ultra?
Samsung Galaxy S25 Ultra is the clearly stronger overall choice, winning most of the dimensions that matter. Samsung Galaxy S25 Ultra leads on raw performance by about 1% on AnTuTu v10 (Snapdragon 8 Elite vs Snapdragon 8 Elite).
What is the main difference between the Xiaomi 15 Ultra and the Samsung Galaxy S25 Ultra?
Samsung Galaxy S25 Ultra leads on raw performance by about 1% on AnTuTu v10 (Snapdragon 8 Elite vs Snapdragon 8 Elite). Xiaomi 15 Ultra is the cheaper option at launch pricing.
Which is better value?
Samsung Galaxy S25 Ultra delivers more performance per dollar, making it the better value of the two at their listed prices.
Which should I choose?
Choose the Samsung Galaxy S25 Ultra if you need all-day (or two-day) battery life.
Methodology
Smartphones are compared on AnTuTu v10 benchmark scores, chipset, display size and refresh rate, battery capacity, rear and front camera resolution, RAM and storage across launch variants, weight, and launch pricing (USD). Each model shows its base variant with the top-spec configuration noted where multiple variants exist. Benchmark scores reflect the listed chipset variant; real-world battery life and camera quality depend on software tuning, not just hardware numbers.