Xiaomi 15 Ultra vs Xiaomi Redmi K100 Pro
Compare Xiaomi 15 Ultra vs Xiaomi Redmi K100 Pro side by side: Qualcomm Snapdragon 8 Elite vs Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 V Series, 50MP vs…
Xiaomi
15 Ultra
$1,499
9categories won
Xiaomi
Redmi K100 Pro
$699
9categories won
4 categories tied · 22 scored in total · add a third phone
Which one wins?
Xiaomi 15 Ultra takes the overall win
The Xiaomi 15 Ultra claims the overall win over the Xiaomi Redmi K100 Pro, delivering a stronger technical package across gaming and photography. For battery longevity and charging speed, the Redmi K100 Pro takes the lead, while the 15 Ultra is the clear choice for demanding 3D gaming and heavy multitasking. Choose the 15 Ultra if you want the highest performance ceiling, or opt for the Redmi K100 Pro if its lower retail price better fit your budget.
Redmi K100 Pro takes battery honors offering 8,580 mAh alongside 100W charging.
15 Ultra leads gaming and raw performance powered by the Qualcomm Snapdragon 8 Elite and 16GB RAM.
15 Ultra wins photography with 50MP main imaging and 4.3x dedicated optical zoom.
Redmi K100 Pro wins on budget and value at $699 compared to $1499.
Category verdicts are computed algorithmically from verified technical specifications and hardware benchmarks. Rows where neither figure is objectively better — screen size preference, operating system choice, aesthetic build materials — are displayed for direct reference without scoring bias.
15 Ultra vs Redmi K100 Pro: specifications compared
Display
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| Screen size | 6.73" | 6.59" |
| Resolution | 1440 x 3200Winner | 1156 x 2510 |
| Pixel density | 522 ppiWinner | 419 ppi |
| Refresh rate | 120 Hz | 185 HzWinner |
| Peak brightness | 3200 nits | 4500 nitsWinner |
Performance
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| Chipset | Qualcomm Snapdragon 8 Elite | Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 V Series |
| Process node | 3 nm | 3 nm |
| AnTuTu score | 2,840,000Winner | 2,400,000 |
| Geekbench multi | 9940Winner | 8900 |
| Maximum RAM | 16 GB | 16 GB |
| Maximum storage | 1TBWinner | 512GB |
Camera
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| Main sensor | 50 MP | 200 MPWinner |
| Rear cameras | 4Winner | 3 |
| Optical zoom | 4.3xWinner | 2.5x |
| Ultrawide | 50 MPWinner | 8 MP |
| Selfie camera | 32 MP | 32 MP |
| Max video | 8K at 30fps, 4K at 120fps Dolby Vision | 8K at 30fps / 4K at 120fps |
Battery and charging
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| Capacity | 6,000 mAh | 8,580 mAhWinner |
| Wired charging | 90 W | 100 WWinner |
| Wireless charging | 80 WWinner | 50 W |
Design
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| Weight | 226 g | 218 gWinner |
| Thickness | 9.4 mm | 8.6 mmWinner |
| Water resistance | IP68 | IP68 |
| Build | Aerospace aluminum frame, eco-leather or ceramic-glass back | Glass front, aluminum frame, glass-fiber reinforced plastic back |
Software and support
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| Operating system | Android 15 | Android 16 |
| OS updates | 4 years | 6 yearsWinner |
| Security updates | 6 years | 6 years |
Connectivity and value
| Specification | 15 Ultra | Redmi K100 Pro |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 (802.11be) | Wi-Fi 7 (802.11be, tri-band 2.4/5/6GHz, 320MHz bandwidth) |
| Storage expansion | None | None |
| 3.5mm jack | No | No |
| Launch price | $1,499 | $699Winner |
Xiaomi 15 Ultra
Equipped with a giant 1-inch Sony LYT-900 primary sensor, an audacious 200MP 4.3x periscope telephoto, a massive 6000 mAh silicon-carbon battery, and 90W fast charging, the Xiaomi 15 Ultra is the ultimate optical zoom powerhouse.
- Display
- 6.73"
- Chipset
- Qualcomm Snapdragon 8 Elite
- Main camera
- 50MP
- Battery
- 6,000mAh
Xiaomi Redmi K100 Pro
The Xiaomi Redmi K100 Pro is a high-performance powerhouse suited for heavy users and gamers. Featuring a massive 8580mAh battery, a Snapdragon 8 Elite Gen 5 chip, and an ultra-fast 185Hz AMOLED display, it delivers flagship-tier hardware, though camera enthusiasts might find the 8MP ultrawide lens underwhelming.
- Display
- 6.59"
- Chipset
- Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 V Series
- Main camera
- 200MP
- Battery
- 8,580mAh