OnePlus 15 vs Redmi K90 Ultra
The OnePlus 15 (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $799 and $420. By overall MobileRank rating, the OnePlus 15 leads — 86/100 vs 73/100 (a 13-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the OnePlus 15 is faster in AnTuTu (3,606,149 vs 3,233,695).
Profile comparison
Category scores
OnePlus 15
Redmi K90 Ultra
What makes OnePlus 15 better?
- Higher AnTuTu: 3606149 vs 3233695
- Better Geekbench Single: 3639 vs 3013
- Better Geekbench Multi: 11047 vs 9287
- Faster charging: 120W vs 100W
- Lighter: 213g vs 227g
- Higher performance (97/100 vs 92/100)
- Better camera (78/100 vs 37/100)
- Longer battery life (89/100 vs 78/100)
- Better portability (50/100 vs 40/100)
What makes Redmi K90 Ultra better?
- Bigger battery: 8550 vs 6500 mAh
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $799
- Better display (94/100 vs 84/100)
Comparison verdict
Comparing the OnePlus 15 vs the Redmi K90 Ultra, the OnePlus 15 scores 13 points higher (86/100 vs 73/100). In the "camera" category, the OnePlus 15 leads (78/100 vs 37/100). In the "battery" category, the OnePlus 15 leads (89/100 vs 78/100). Value score: OnePlus 15 — 86/100, Redmi K90 Ultra — 72/100; 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 Redmi K90 Ultra is a bit better (94/100 vs 84/100). In the "camera" category, the OnePlus 15 significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100). In the "battery" category, the OnePlus 15 is a bit better (89/100 vs 78/100). In the "portability" category, the OnePlus 15 is a bit better (50/100 vs 40/100).
Specs comparison
| Specification | OnePlus 15 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3606149 | 3233695 | |
| Geekbench Single | 3639 | 3013 | |
| Geekbench Multi | 11047 | 9287 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2772 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 6500 mAh | 8550 mAh | |
| Charging | 120W | 100W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16, OxygenOS 16 (Global), ColorOS 16 (China) | Android 16 | |
| Brightness (peak) | 1800 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 161.4×76.7×8.1 mm | 162.9×77.9×8.2 mm | |
| Weight | 213 g | 227 g | |
| Launch price | $799 | $420 |
Camera comparison
OnePlus 15
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Display comparison
OnePlus 15
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Battery and charging
OnePlus 15
- 6500 mAh
- Wired: 120W
- Wireless: 50W
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Overall performance score
We compared OnePlus 15 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
OnePlus 15 leads Redmi K90 Ultra by 11.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $379. Redmi K90 Ultra was $379 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 Redmi K90 Ultra is a bit better (94/100 vs 84/100).
camera
In the "camera" category, the OnePlus 15 significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100).
battery
In the "battery" category, the OnePlus 15 is a bit better (89/100 vs 78/100).
portability
In the "portability" category, the OnePlus 15 is a bit better (50/100 vs 40/100).
Frequently asked questions
Which is better: the OnePlus 15 or the Redmi K90 Ultra?
The OnePlus 15 is noticeably better than the Redmi K90 Ultra — the overall rating gap is 13 points.
What is the rating of the OnePlus 15 and the Redmi K90 Ultra?
The OnePlus 15 has a MobileRank rating of 86/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the OnePlus 15 or the Redmi K90 Ultra?
The OnePlus 15 leads on camera score (78/100 vs 37/100).
Which is more powerful: the OnePlus 15 or the Redmi K90 Ultra?
The OnePlus 15 leads on performance (97/100 vs 92/100).
Should you choose the OnePlus 15 over the Redmi K90 Ultra?
The OnePlus 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.