OnePlus 15 vs Xiaomi 15 Ultra
The OnePlus 15 (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $799 and $999. By overall MobileRank rating, the OnePlus 15 leads — 86/100 vs 85/100 (a 1-point difference). Key differences: the OnePlus 15 has the bigger battery (6500 mAh vs 6000); the OnePlus 15 is faster in AnTuTu (3,606,149 vs 3,030,376); the OnePlus 15 is thinner (8.1mm vs 9.4mm).
Profile comparison
Category scores
OnePlus 15
Xiaomi 15 Ultra
What makes OnePlus 15 better?
- Higher AnTuTu: 3606149 vs 3030376
- Better Geekbench Single: 3639 vs 3050
- Better Geekbench Multi: 11047 vs 10200
- Bigger battery: 6500 vs 6000 mAh
- Faster charging: 120W vs 90W
- Lighter: 213g vs 225g
- Cheaper at launch: $799 vs $999
- Higher performance (97/100 vs 92/100)
- Longer battery life (89/100 vs 80/100)
- Better portability (50/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Better camera (87/100 vs 78/100)
- Better display (90/100 vs 84/100)
Comparison verdict
Comparing the OnePlus 15 vs the Xiaomi 15 Ultra, the OnePlus 15 scores 1 points higher (86/100 vs 85/100). Value score: OnePlus 15 — 86/100, Xiaomi 15 Ultra — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the OnePlus 15 is a bit better (97/100 vs 92/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100). In the "camera" category, the Xiaomi 15 Ultra is a bit better (87/100 vs 78/100). In the "battery" category, the OnePlus 15 is a bit better (89/100 vs 80/100). In the "portability" category, the OnePlus 15 notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
Specs comparison
| Specification | OnePlus 15 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3606149 | 3030376 | |
| Geekbench Single | 3639 | 3050 | |
| Geekbench Multi | 11047 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1272x2772 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6500 mAh | 6000 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 50W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16, OxygenOS 16 (Global), ColorOS 16 (China) | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1800 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 161.4×76.7×8.1 mm | 161.3×75.3×9.4 mm | |
| Weight | 213 g | 225 g | |
| Launch price | $799 | $999 |
Camera comparison
OnePlus 15
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
OnePlus 15
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
OnePlus 15
- 6500 mAh
- Wired: 120W
- Wireless: 50W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared OnePlus 15 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
OnePlus 15 leads Xiaomi 15 Ultra by 19.0% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $200. OnePlus 15 was $200 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the OnePlus 15 is a bit better (97/100 vs 92/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100).
camera
In the "camera" category, the Xiaomi 15 Ultra is a bit better (87/100 vs 78/100).
battery
In the "battery" category, the OnePlus 15 is a bit better (89/100 vs 80/100).
portability
In the "portability" category, the OnePlus 15 notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
Frequently asked questions
Which is better: the OnePlus 15 or the Xiaomi 15 Ultra?
The OnePlus 15 edges out the Xiaomi 15 Ultra by just 1 points — the two devices are very close in overall level.
What is the rating of the OnePlus 15 and the Xiaomi 15 Ultra?
The OnePlus 15 has a MobileRank rating of 86/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the OnePlus 15 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 78/100).
Which is more powerful: the OnePlus 15 or the Xiaomi 15 Ultra?
The OnePlus 15 leads on performance (97/100 vs 92/100).
Should you choose the OnePlus 15 over the Xiaomi 15 Ultra?
The OnePlus 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.