OnePlus 9RT vs Xiaomi 18 Pro Max
The OnePlus 9RT (2021) runs on the Qualcomm Snapdragon 888, while the Xiaomi 18 Pro Max (2026) runs on the Qualcomm Snapdragon 8 Elite Extreme Gen 6. By overall MobileRank rating, the Xiaomi 18 Pro Max leads — 92/100 vs 56/100 (a 36-point difference). Key differences: the Xiaomi 18 Pro Max has the bigger battery (8500 mAh vs 4500); the main camera is 50 MP vs 200 MP; the Xiaomi 18 Pro Max is faster in AnTuTu (5,001,234 vs 1,139,950); the OnePlus 9RT is noticeably lighter (198g vs 235g).
Profile comparison
Category scores
OnePlus 9RT
Xiaomi 18 Pro Max
What makes OnePlus 9RT better?
- Lighter: 198g vs 235g
- Better portability (57/100 vs 33/100)
What makes Xiaomi 18 Pro Max better?
- Higher AnTuTu: 5001234 vs 1139950
- Better Geekbench Single: 4327 vs 1500
- Better Geekbench Multi: 12873 vs 3537
- Bigger battery: 8500 vs 4500 mAh
- Faster charging: 100W vs 65W
- Better main camera: 200MP vs 50MP
- Higher performance (100/100 vs 64/100)
- Better camera (100/100 vs 39/100)
- Longer battery life (92/100 vs 42/100)
- Better display (82/100 vs 80/100)
Comparison verdict
Comparing the OnePlus 9RT vs the Xiaomi 18 Pro Max, the Xiaomi 18 Pro Max scores 36 points higher (92/100 vs 56/100). In the "performance" category, the Xiaomi 18 Pro Max leads (100/100 vs 64/100). In the "camera" category, the Xiaomi 18 Pro Max leads (100/100 vs 39/100). In the "battery" category, the Xiaomi 18 Pro Max leads (92/100 vs 42/100). In the "performance" category, the Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT (100/100 vs 64/100). In the "display" category, the Xiaomi 18 Pro Max and the OnePlus 9RT are nearly equal (82/100 vs 80/100). In the "camera" category, the Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT (100/100 vs 39/100). In the "battery" category, the Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT (92/100 vs 42/100). In the "portability" category, the OnePlus 9RT notably outperforms the Xiaomi 18 Pro Max (57/100 vs 33/100).
Specs comparison
| Specification | OnePlus 9RT | Xiaomi 18 Pro Max | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 8 Elite Extreme Gen 6 | |
| AnTuTu | 1139950 | 5001234 | |
| Geekbench Single | 1500 | 4327 | |
| Geekbench Multi | 3537 | 12873 | |
| Display | 6.6" AMOLED | 6.9" LTPO AMOLED | |
| Resolution | 1080x2400 | 1208x2624 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4500 mAh | 8500 mAh | |
| Charging | 65W | 100W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 16 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 16 MP | 50 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11 | Android 17 | |
| Brightness (peak) | — | 4000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 162.2×74.6×8.3 mm | 163.4×77.6×8.4 mm | |
| Weight | 198 g | 235 g | |
| Launch price | — | $986 |
Camera comparison
OnePlus 9RT
- Main: 50MP
- Ultrawide: 16MP
- Front: 16MP
Xiaomi 18 Pro Max
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
OnePlus 9RT
- 6.6" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Xiaomi 18 Pro Max
- 6.9" LTPO AMOLED
- Resolution: 1208x2624
- Refresh rate: 120 Hz
Battery and charging
OnePlus 9RT
- 4500 mAh
- Wired: 65W
- No wireless charging
Xiaomi 18 Pro Max
- 8500 mAh
- Wired: 100W
- Wireless: 50W
Overall performance score
We compared OnePlus 9RT and Xiaomi 18 Pro Max, covering their specs and all relevant benchmarks.
Xiaomi 18 Pro Max leads OnePlus 9RT by 77.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
OnePlus 9RT
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT (100/100 vs 64/100).
display
In the "display" category, the Xiaomi 18 Pro Max and the OnePlus 9RT are nearly equal (82/100 vs 80/100).
camera
In the "camera" category, the Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT (100/100 vs 39/100).
battery
In the "battery" category, the Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT (92/100 vs 42/100).
portability
In the "portability" category, the OnePlus 9RT notably outperforms the Xiaomi 18 Pro Max (57/100 vs 33/100).
Frequently asked questions
Which is better: the OnePlus 9RT or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max significantly outperforms the OnePlus 9RT by 36 points (92/100 vs 56/100).
What is the rating of the OnePlus 9RT and the Xiaomi 18 Pro Max?
The OnePlus 9RT has a MobileRank rating of 56/100, the Xiaomi 18 Pro Max — 92/100.
Which has the better camera: the OnePlus 9RT or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max leads on camera score (100/100 vs 39/100).
Which is more powerful: the OnePlus 9RT or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max leads on performance (100/100 vs 64/100).
Should you choose the OnePlus 9RT over the Xiaomi 18 Pro Max?
The OnePlus 9RT is a better fit for active users. The Xiaomi 18 Pro Max is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.