OnePlus Ace 6T vs Xiaomi 15 Ultra
The OnePlus Ace 6T (2025) runs on the Qualcomm Snapdragon 8 Gen 5, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $320 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 72/100 (a 13-point difference). Key differences: the OnePlus Ace 6T has the bigger battery (8300 mAh vs 6000); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 2,810,314); the OnePlus Ace 6T is thinner (8.1mm vs 9.4mm).
OnePlus Ace 6T
Xiaomi 15 Ultra
- Bigger battery: 8300 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 211g vs 225g
- Cheaper: $320 vs $999
- Better display (94/100 vs 90/100)
- Better portability (51/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 2810314
- Better Geekbench Single: 3050 vs 2903
- Better Geekbench Multi: 10200 vs 9602
- Higher performance (92/100 vs 90/100)
- Better camera (87/100 vs 35/100)
- Longer battery life (80/100 vs 77/100)
Comparing the OnePlus Ace 6T 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). In the "performance" category, the Xiaomi 15 Ultra and the OnePlus Ace 6T are nearly equal (92/100 vs 90/100). In the "display" category, the OnePlus Ace 6T and the Xiaomi 15 Ultra are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus Ace 6T (87/100 vs 35/100). In the "battery" category, the Xiaomi 15 Ultra and the OnePlus Ace 6T are nearly equal (80/100 vs 77/100). In the "portability" category, the OnePlus Ace 6T notably outperforms the Xiaomi 15 Ultra (51/100 vs 29/100).
| Specification | OnePlus Ace 6T | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 2810314 | 3030376 | |
| Geekbench Single | 2903 | 3050 | |
| Geekbench Multi | 9602 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1272x2800 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8300 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 | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 3600 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 163.4×77.0×8.1 mm | 161.3×75.3×9.4 mm | |
| Weight | 211 g | 225 g | |
| Price | $320 | $999 |
OnePlus Ace 6T
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
OnePlus Ace 6T
- 6.8" AMOLED
- Resolution: 1272x2800
- Refresh rate: 165 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
OnePlus Ace 6T
- 8300 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
We compared OnePlus Ace 6T and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads OnePlus Ace 6T by 7.3% in our overall performance rating.
Price difference: $679. OnePlus Ace 6T is cheaper by $679.
performance
In the "performance" category, the Xiaomi 15 Ultra and the OnePlus Ace 6T are nearly equal (92/100 vs 90/100).
display
In the "display" category, the OnePlus Ace 6T 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 OnePlus Ace 6T (87/100 vs 35/100).
battery
In the "battery" category, the Xiaomi 15 Ultra and the OnePlus Ace 6T are nearly equal (80/100 vs 77/100).
portability
In the "portability" category, the OnePlus Ace 6T notably outperforms the Xiaomi 15 Ultra (51/100 vs 29/100).
Which is better: the OnePlus Ace 6T or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the OnePlus Ace 6T — the overall rating gap is 13 points.
What is the rating of the OnePlus Ace 6T and the Xiaomi 15 Ultra?
The OnePlus Ace 6T has a MobileRank rating of 72/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the OnePlus Ace 6T or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 35/100).
Should you choose the OnePlus Ace 6T over the Xiaomi 15 Ultra?
The OnePlus Ace 6T 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.