OnePlus Ace 6 Ultra vs Redmi 15
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Redmi 15 (2025) runs on the Qualcomm Snapdragon 685; launch prices were $555 and $180. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 43/100 (a 31-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 7000); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 476,175).
Profile comparison
Category scores
OnePlus Ace 6 Ultra
Redmi 15
What makes OnePlus Ace 6 Ultra better?
- Higher AnTuTu: 3429868 vs 476175
- Better Geekbench Single: 3352 vs 466
- Better Geekbench Multi: 10402 vs 1396
- Bigger battery: 8600 vs 7000 mAh
- Faster charging: 120W vs 33W
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (94/100 vs 34/100)
- Better camera (35/100 vs 30/100)
- Longer battery life (82/100 vs 58/100)
- Better display (94/100 vs 74/100)
What makes Redmi 15 better?
- Lighter: 214g vs 217g
- Cheaper at launch: $180 vs $555
- Better portability (46/100 vs 43/100)
Comparison verdict
Comparing the OnePlus Ace 6 Ultra vs the Redmi 15, the OnePlus Ace 6 Ultra scores 31 points higher (74/100 vs 43/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (94/100 vs 34/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 58/100). Value score: OnePlus Ace 6 Ultra — 66/100, Redmi 15 — 52/100; 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 Ace 6 Ultra significantly outperforms the Redmi 15 (94/100 vs 34/100). In the "display" category, the OnePlus Ace 6 Ultra notably outperforms the Redmi 15 (94/100 vs 74/100). In the "camera" category, the OnePlus Ace 6 Ultra is a bit better (35/100 vs 30/100). In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Redmi 15 (82/100 vs 58/100). In the "portability" category, the Redmi 15 and the OnePlus Ace 6 Ultra are nearly equal (46/100 vs 43/100).
Specs comparison
| Specification | OnePlus Ace 6 Ultra | Redmi 15 | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 685 | |
| AnTuTu | 3429868 | 476175 | |
| Geekbench Single | 3352 | 466 | |
| Geekbench Multi | 10402 | 1396 | |
| Display | 6.8" AMOLED | 6.9" IPS LCD | |
| Resolution | 1272x2772 | 2340x1080 | |
| Refresh rate | 165 Hz | 144 Hz | |
| Battery | 8600 mAh | 7000 mAh | |
| Charging | 120W | 33W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 16 MP | 8 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Xiaomi HyperOS 2 | |
| Brightness (peak) | 1800 nits | 850 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP64 | |
| Dimensions | 162.5×77.5×8.5 mm | 169.5×80.5×8.4 mm | |
| Weight | 217 g | 214 g | |
| Launch price | $555 | $180 |
Camera comparison
OnePlus Ace 6 Ultra
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi 15
- Main: 50MP f/1.8
- Front: 8MP
Display comparison
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Redmi 15
- 6.9" IPS LCD
- Resolution: 2340x1080
- Refresh rate: 144 Hz
Battery and charging
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Redmi 15
- 7000 mAh
- Wired: 33W
- No wireless charging
Overall performance score
We compared OnePlus Ace 6 Ultra and Redmi 15, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Redmi 15 by 620.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $375. Redmi 15 was $375 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the OnePlus Ace 6 Ultra significantly outperforms the Redmi 15 (94/100 vs 34/100).
display
In the "display" category, the OnePlus Ace 6 Ultra notably outperforms the Redmi 15 (94/100 vs 74/100).
camera
In the "camera" category, the OnePlus Ace 6 Ultra is a bit better (35/100 vs 30/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Redmi 15 (82/100 vs 58/100).
portability
In the "portability" category, the Redmi 15 and the OnePlus Ace 6 Ultra are nearly equal (46/100 vs 43/100).
Frequently asked questions
Which is better: the OnePlus Ace 6 Ultra or the Redmi 15?
The OnePlus Ace 6 Ultra significantly outperforms the Redmi 15 by 31 points (74/100 vs 43/100).
What is the rating of the OnePlus Ace 6 Ultra and the Redmi 15?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Redmi 15 — 43/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Redmi 15?
The OnePlus Ace 6 Ultra leads on camera score (35/100 vs 30/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Redmi 15?
The OnePlus Ace 6 Ultra leads on performance (94/100 vs 34/100).
Should you choose the OnePlus Ace 6 Ultra over the Redmi 15?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life.