Samsung
Galaxy S26 Ultra
Snapdragon 8 Elite 2 · 6.9″ · 200 MP
94
/ 100
From $1,399
VS
Galaxy S26 Ultra wins by 2
Xiaomi
Xiaomi 15 Ultra
Snapdragon 8 Elite · Leica · 1-inch sensor
92
/ 100
From $1,499
Specdex verdict
Galaxy S26 Ultra takes it — here’s why.
In our weighted Specdex score, Galaxy S26 Ultra lands at 94 and Xiaomi 15 Ultra at 92. That puts Galaxy S26 Ultra ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Galaxy S26 Ultra if…
- ✓Snapdragon 8 Elite 2 (3 nm refined)
- ✓Galaxy AI Gen 3 with Agent Flow
- ✓7-year updates through Android 23
Pick Xiaomi 15 Ultra if…
- ✓1-inch LYT-900 main sensor
- ✓Leica tuning on every camera
- ✓90W + 80W wireless charging
Score breakdown
Galaxy S26 Ultra
94 cpu 97
gpu 97
camera 95
battery 90
display 97
design 93
Xiaomi 15 Ultra
92 cpu 96
gpu 96
camera 98
battery 92
display 94
design 88
Specs side-by-side
Spec
Galaxy S26 Ultra
Xiaomi 15 Ultra
Display
6.9″ Dynamic AMOLED 2X, 120Hz, 3120×1440
6.73″ LTPO AMOLED, 120Hz, 3200×1440
Chipset
Snapdragon 8 Elite 2 for Galaxy
Snapdragon 8 Elite
RAM
16 GB
12/16 GB
Storage
256 / 512 GB / 1 TB
256 GB – 1 TB
Battery
5200 mAh
6000 mAh
OS
Android 16, One UI 8
HyperOS 2 / Android 15
Rear camera
—
50 MP 1″ + 50 MP 3× + 50 MP 4.3× periscope + 50 MP UW
Charging
—
90W wired, 80W wireless
Galaxy S26 Ultra
Pros
- +Snapdragon 8 Elite 2 (3 nm refined)
- +Galaxy AI Gen 3 with Agent Flow
- +7-year updates through Android 23
Cons
- −Price crept up $100 vs S25 Ultra
- −AI features vary by region
- −Still 45W charging
Xiaomi 15 Ultra
Pros
- +1-inch LYT-900 main sensor
- +Leica tuning on every camera
- +90W + 80W wireless charging
Cons
- −Limited US availability
- −HyperOS still maturing
- −Large and heavy
FAQ: Galaxy S26 Ultra vs Xiaomi 15 Ultra
Which is better, Galaxy S26 Ultra or Xiaomi 15 Ultra? +
Galaxy S26 Ultra scores 94 on our weighted rubric — ahead by 2. Your best pick depends on the sub-scores above.
Is Galaxy S26 Ultra worth the price? +
At $1,399, Galaxy S26 Ultra delivers a Specdex score of 94 — strongest in cpu.
Is Xiaomi 15 Ultra worth the price? +
At $1,499, Xiaomi 15 Ultra delivers a Specdex score of 92 — strongest in camera.
Does Galaxy S26 Ultra or Xiaomi 15 Ultra last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.