Redmi K100 Pro Max vs Xiaomi 15 Ultra
The Redmi K100 Pro Max (2026) runs on the Snapdragon 8 Elite Gen 5, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $730 and $999. By overall MobileRank rating, the Redmi K100 Pro Max leads — 94/100 vs 85/100 (a 9-point difference). Key differences: the Redmi K100 Pro Max has the bigger battery (9070 mAh vs 6000); the main camera is 200 MP vs 50 MP; the Redmi K100 Pro Max is faster in AnTuTu (3,942,923 vs 3,030,376).
Redmi K100 Pro Max
Xiaomi 15 Ultra
- Higher AnTuTu: 3942923 vs 3030376
- Better Geekbench Single: 3640 vs 3050
- Better Geekbench Multi: 11033 vs 10200
- Bigger battery: 9070 vs 6000 mAh
- Faster charging: 100W vs 90W
- Better main camera: 200MP vs 50MP
- Higher refresh rate: 185Hz vs 120Hz
- Cheaper at launch: $730 vs $999
- Higher performance (98/100 vs 92/100)
- Better camera (90/100 vs 87/100)
- Longer battery life (95/100 vs 80/100)
- Better display (91/100 vs 90/100)
- Overall rating 85/100
Comparing the Redmi K100 Pro Max vs the Xiaomi 15 Ultra, the Redmi K100 Pro Max scores 9 points higher (94/100 vs 85/100). In the "battery" category, the Redmi K100 Pro Max leads (95/100 vs 80/100). Value score: Redmi K100 Pro Max — 100/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K100 Pro Max is a bit better (98/100 vs 92/100). In the "display" category, the Redmi K100 Pro Max and the Xiaomi 15 Ultra are nearly equal (91/100 vs 90/100). In the "camera" category, the Redmi K100 Pro Max and the Xiaomi 15 Ultra are nearly equal (90/100 vs 87/100). In the "battery" category, the Redmi K100 Pro Max notably outperforms the Xiaomi 15 Ultra (95/100 vs 80/100).
| Specification | Redmi K100 Pro Max | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3942923 | 3030376 | |
| Geekbench Single | 3640 | 3050 | |
| Geekbench Multi | 11033 | 10200 | |
| Display | 6.9" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1200x2608 | 3200x1440 | |
| Refresh rate | 185 Hz | 120 Hz | |
| Battery | 9070 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 50W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 4500 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP69 | IP68 | |
| Dimensions | — | 161.3×75.3×9.4 mm | |
| Weight | — | 225 g | |
| Launch price | $730 | $999 |
Redmi K100 Pro Max
- Main: 200MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Redmi K100 Pro Max
- 6.9" AMOLED
- Resolution: 1200x2608
- Refresh rate: 185 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Redmi K100 Pro Max
- 9070 mAh
- Wired: 100W
- Wireless: 50W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Redmi K100 Pro Max and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Redmi K100 Pro Max leads Xiaomi 15 Ultra by 30.1% in our overall performance rating.
Launch price difference: $269. Redmi K100 Pro Max was $269 cheaper at launch.
performance
In the "performance" category, the Redmi K100 Pro Max is a bit better (98/100 vs 92/100).
display
In the "display" category, the Redmi K100 Pro Max and the Xiaomi 15 Ultra are nearly equal (91/100 vs 90/100).
camera
In the "camera" category, the Redmi K100 Pro Max and the Xiaomi 15 Ultra are nearly equal (90/100 vs 87/100).
battery
In the "battery" category, the Redmi K100 Pro Max notably outperforms the Xiaomi 15 Ultra (95/100 vs 80/100).
Which is better: the Redmi K100 Pro Max or the Xiaomi 15 Ultra?
The Redmi K100 Pro Max edges out the Xiaomi 15 Ultra by just 9 points — the two devices are very close in overall level.
What is the rating of the Redmi K100 Pro Max and the Xiaomi 15 Ultra?
The Redmi K100 Pro Max has a MobileRank rating of 94/100, the Xiaomi 15 Ultra — 85/100.
Which is more powerful: the Redmi K100 Pro Max or the Xiaomi 15 Ultra?
The Redmi K100 Pro Max leads on performance (98/100 vs 92/100).
Should you choose the Redmi K100 Pro Max over the Xiaomi 15 Ultra?
The Redmi K100 Pro Max is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers. 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.