OPPO K15 Pro+ vs Xiaomi 15 Ultra
The OPPO K15 Pro+ (2026) runs on the MediaTek Dimensity 9500s, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $509 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 72/100 (a 13-point difference). Key differences: the OPPO K15 Pro+ has the bigger battery (8000 mAh vs 6000); the OPPO K15 Pro+ is faster in AnTuTu (3,032,039 vs 3,030,376); the OPPO K15 Pro+ is thinner (8.3mm vs 9.4mm).
Profile comparison
Category scores
OPPO K15 Pro+
Xiaomi 15 Ultra
What makes OPPO K15 Pro+ better?
- Higher AnTuTu: 3032039 vs 3030376
- Bigger battery: 8000 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 219g vs 225g
- Cheaper at launch: $509 vs $999
- Better display (94/100 vs 90/100)
- Better portability (44/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Better Geekbench Single: 3050 vs 2725
- Better Geekbench Multi: 10200 vs 8932
- Higher performance (92/100 vs 90/100)
- Better camera (87/100 vs 35/100)
- Longer battery life (80/100 vs 75/100)
Comparison verdict
Comparing the OPPO K15 Pro+ vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 13 points higher (85/100 vs 72/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 35/100). Value score: OPPO K15 Pro+ — 64/100, 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 Xiaomi 15 Ultra and the OPPO K15 Pro+ are nearly equal (92/100 vs 90/100). In the "display" category, the OPPO K15 Pro+ and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OPPO K15 Pro+ (87/100 vs 35/100). In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 75/100). In the "portability" category, the OPPO K15 Pro+ notably outperforms the Xiaomi 15 Ultra (44/100 vs 29/100).
Specs comparison
| Specification | OPPO K15 Pro+ | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500s | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3032039 | 3030376 | |
| Geekbench Single | 2725 | 3050 | |
| Geekbench Multi | 8932 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2772x1272 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8000 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB | 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1800 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 162.4×77.5×8.3 mm | 161.3×75.3×9.4 mm | |
| Weight | 219 g | 225 g | |
| Launch price | $509 | $999 |
Camera comparison
OPPO K15 Pro+
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
OPPO K15 Pro+
- 6.8" AMOLED
- Resolution: 2772x1272
- Refresh rate: 165 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
OPPO K15 Pro+
- 8000 mAh
- Wired: 100W
- No wireless charging
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 OPPO K15 Pro+ and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
OPPO K15 Pro+ leads Xiaomi 15 Ultra by 0.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $490. OPPO K15 Pro+ was $490 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra and the OPPO K15 Pro+ are nearly equal (92/100 vs 90/100).
display
In the "display" category, the OPPO K15 Pro+ and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OPPO K15 Pro+ (87/100 vs 35/100).
battery
In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 75/100).
portability
In the "portability" category, the OPPO K15 Pro+ notably outperforms the Xiaomi 15 Ultra (44/100 vs 29/100).
Frequently asked questions
Which is better: the OPPO K15 Pro+ or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the OPPO K15 Pro+ — the overall rating gap is 13 points.
What is the rating of the OPPO K15 Pro+ and the Xiaomi 15 Ultra?
The OPPO K15 Pro+ has a MobileRank rating of 72/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the OPPO K15 Pro+ or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 35/100).
Should you choose the OPPO K15 Pro+ over the Xiaomi 15 Ultra?
The OPPO K15 Pro+ is a better fit for gamers and power users, those who care about battery life. 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.