Redmi K90 Ultra vs Xiaomi 15S Pro
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 15S Pro (2025) runs on the Xiaomi XRING O1; launch prices were $420 and $760. By overall MobileRank rating, the Xiaomi 15S Pro leads — 84/100 vs 73/100 (a 11-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6100); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 2,998,904).
Profile comparison
Category scores
Redmi K90 Ultra
Xiaomi 15S Pro
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 2998904
- Better Geekbench Single: 3013 vs 2746
- Better Geekbench Multi: 9287 vs 8431
- Bigger battery: 8550 vs 6100 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper at launch: $420 vs $760
- Higher performance (92/100 vs 89/100)
- Longer battery life (78/100 vs 77/100)
- Better display (94/100 vs 90/100)
What makes Xiaomi 15S Pro better?
- Better camera (78/100 vs 37/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Xiaomi 15S Pro, the Xiaomi 15S Pro scores 11 points higher (84/100 vs 73/100). In the "camera" category, the Xiaomi 15S Pro leads (78/100 vs 37/100). Value score: Redmi K90 Ultra — 72/100, Xiaomi 15S Pro — 82/100; 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 Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (92/100 vs 89/100). In the "display" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (94/100 vs 90/100). In the "camera" category, the Xiaomi 15S Pro significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (78/100 vs 77/100).
Specs comparison
| Specification | Redmi K90 Ultra | Xiaomi 15S Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Xiaomi XRING O1 | |
| AnTuTu | 3233695 | 2998904 | |
| Geekbench Single | 3013 | 2746 | |
| Geekbench Multi | 9287 | 8431 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1280x2772 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6100 mAh | |
| Charging | 100W | 90W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB | 512GB / 1TB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | — | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | — | |
| Weight | 227 g | — | |
| Launch price | $420 | $760 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 15S Pro
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Xiaomi 15S Pro
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Xiaomi 15S Pro
- 6100 mAh
- Wired: 90W
- Wireless charging: no data
Overall performance score
We compared Redmi K90 Ultra and Xiaomi 15S Pro, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Xiaomi 15S Pro by 7.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $340. Redmi K90 Ultra was $340 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (92/100 vs 89/100).
display
In the "display" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (94/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15S Pro significantly outperforms the Redmi K90 Ultra (78/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra and the Xiaomi 15S Pro are nearly equal (78/100 vs 77/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Xiaomi 15S Pro?
The Xiaomi 15S Pro is noticeably better than the Redmi K90 Ultra — the overall rating gap is 11 points.
What is the rating of the Redmi K90 Ultra and the Xiaomi 15S Pro?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Xiaomi 15S Pro — 84/100.
Which has the better camera: the Redmi K90 Ultra or the Xiaomi 15S Pro?
The Xiaomi 15S Pro leads on camera score (78/100 vs 37/100).
Should you choose the Redmi K90 Ultra over the Xiaomi 15S Pro?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life. The Xiaomi 15S Pro is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.