OnePlus Ace 6 Ultra vs Xiaomi 15T
The OnePlus Ace 6 Ultra (2026) runs on the MediaTek Dimensity 9500, while the Xiaomi 15T (2025) runs on the MediaTek Dimensity 8400 Ultra; launch prices were $555 and $449. By overall MobileRank rating, the OnePlus Ace 6 Ultra leads — 74/100 vs 69/100 (a 5-point difference). Key differences: the OnePlus Ace 6 Ultra has the bigger battery (8600 mAh vs 5500); the OnePlus Ace 6 Ultra is faster in AnTuTu (3,429,868 vs 1,915,524); the Xiaomi 15T is noticeably lighter (194g vs 217g).
OnePlus Ace 6 Ultra
Xiaomi 15T
- Higher AnTuTu: 3429868 vs 1915524
- Better Geekbench Single: 3228 vs 1579
- Better Geekbench Multi: 9553 vs 6100
- Bigger battery: 8600 vs 5500 mAh
- Faster charging: 120W vs 67W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (93/100 vs 76/100)
- Longer battery life (82/100 vs 59/100)
- Better display (94/100 vs 83/100)
- Lighter: 194g vs 217g
- Cheaper at launch: $449 vs $555
- Better camera (59/100 vs 35/100)
- Better portability (67/100 vs 43/100)
- Higher value score: 70/100 vs 66/100
Comparing the OnePlus Ace 6 Ultra vs the Xiaomi 15T, the OnePlus Ace 6 Ultra scores 5 points higher (74/100 vs 69/100). In the "performance" category, the OnePlus Ace 6 Ultra leads (93/100 vs 76/100). In the "camera" category, the Xiaomi 15T leads (59/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra leads (82/100 vs 59/100). In the "performance" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 15T (93/100 vs 76/100). In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 83/100). In the "camera" category, the Xiaomi 15T notably outperforms the OnePlus Ace 6 Ultra (59/100 vs 35/100). In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 15T (82/100 vs 59/100). In the "portability" category, the Xiaomi 15T notably outperforms the OnePlus Ace 6 Ultra (67/100 vs 43/100). In the "value for money" category, the Xiaomi 15T and the OnePlus Ace 6 Ultra are nearly equal (70/100 vs 66/100).
| Specification | OnePlus Ace 6 Ultra | Xiaomi 15T | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | MediaTek Dimensity 8400 Ultra | |
| AnTuTu | 3429868 | 1915524 | |
| Geekbench Single | 3228 | 1579 | |
| Geekbench Multi | 9553 | 6100 | |
| Display | 6.8" AMOLED | 6.8" AMOLED | |
| Resolution | 1272x2772 | 2712x1220 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8600 mAh | 5500 mAh | |
| Charging | 120W | 67W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 12 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 16 MP | 20 MP | |
| RAM | 12GB / 16GB | 12GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 1800 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP66 | IP68 | |
| Dimensions | 162.5×77.5×8.5 mm | 163.2×78.0×7.5 mm | |
| Weight | 217 g | 194 g | |
| Launch price | $555 | $449 |
OnePlus Ace 6 Ultra
- Main: 50MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 15T
- Main: 50MP f/1.6
- Ultrawide: 12MP
- Telephoto: 50MP
- Front: 20MP
OnePlus Ace 6 Ultra
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 165 Hz
Xiaomi 15T
- 6.8" AMOLED
- Resolution: 2712x1220
- Refresh rate: 120 Hz
OnePlus Ace 6 Ultra
- 8600 mAh
- Wired: 120W
- No wireless charging
Xiaomi 15T
- 5500 mAh
- Wired: 67W
- No wireless charging
We compared OnePlus Ace 6 Ultra and Xiaomi 15T, covering their specs and all relevant benchmarks.
OnePlus Ace 6 Ultra leads Xiaomi 15T by 79.1% in our overall performance rating.
Launch price difference: $106. Xiaomi 15T was $106 cheaper at launch.
performance
In the "performance" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 15T (93/100 vs 76/100).
display
In the "display" category, the OnePlus Ace 6 Ultra is a bit better (94/100 vs 83/100).
camera
In the "camera" category, the Xiaomi 15T notably outperforms the OnePlus Ace 6 Ultra (59/100 vs 35/100).
battery
In the "battery" category, the OnePlus Ace 6 Ultra notably outperforms the Xiaomi 15T (82/100 vs 59/100).
portability
In the "portability" category, the Xiaomi 15T notably outperforms the OnePlus Ace 6 Ultra (67/100 vs 43/100).
value for money
In the "value for money" category, the Xiaomi 15T and the OnePlus Ace 6 Ultra are nearly equal (70/100 vs 66/100).
Which is better: the OnePlus Ace 6 Ultra or the Xiaomi 15T?
The OnePlus Ace 6 Ultra edges out the Xiaomi 15T by just 5 points — the two devices are very close in overall level.
What is the rating of the OnePlus Ace 6 Ultra and the Xiaomi 15T?
The OnePlus Ace 6 Ultra has a MobileRank rating of 74/100, the Xiaomi 15T — 69/100.
Which has the better camera: the OnePlus Ace 6 Ultra or the Xiaomi 15T?
The Xiaomi 15T leads on camera score (59/100 vs 35/100).
Which is more powerful: the OnePlus Ace 6 Ultra or the Xiaomi 15T?
The OnePlus Ace 6 Ultra leads on performance (93/100 vs 76/100).
Should you choose the OnePlus Ace 6 Ultra over the Xiaomi 15T?
The OnePlus Ace 6 Ultra is a better fit for gamers and power users, those who care about battery life. The Xiaomi 15T is a better fit for active users.