Between the OnePlus 13 and OnePlus Open 2, the OnePlus 13 comes out ahead in weight and pixel density, while the OnePlus Open 2 wins on screen size and antutu. Overall, the OnePlus 13 scores 73.8 and the OnePlus Open 2 scores 74.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (73.8 vs 74.5). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the OnePlus 13 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, pixel density, wired charging, among others.
Pick the OnePlus Open 2 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are screen size, antutu.
Both ship with comparable ram, main camera, refresh rate, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why OnePlus 13 wins
- ▲Weight — 29.00 g less. 210 vs 239.
- ▲Pixel density — 26.87% more. 510 ppi vs 402 ppi.
- ▲Wired charging — 25.00% more. 100 W vs 80 W.
- ▲Battery capacity — 5.26% more. 6000 mAh vs 5700 mAh.
- ▲Water resistance: IP69 (vs IP68).
Why OnePlus Open 2 wins
- ▲Screen size — 17.30% more. 8.0 " vs 6.82 ".
- ▲AnTuTu — 1.52% more. 2680000 vs 2640000.
Spec comparison
Design
| Spec | OnePlus 13 | OnePlus Open 2 |
|---|---|---|
| Weight | 210 glead | 239 g |
| Thickness | 8.5 mmlead | 11.7 mm |
| Water resistanceⓘ | IP69lead | IP68 |
| Form factor | bar | foldable_booklead |
Display
| Spec | OnePlus 13 | OnePlus Open 2 |
|---|---|---|
| Screen sizeⓘ | 6.82 " | 8.0 "lead |
| Pixel densityⓘ | 510 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nits | 4500 nits |
Performance
Cameras
| Spec | OnePlus 13 | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | OnePlus 13 | OnePlus Open 2 |
|---|---|---|
| Battery capacity | 6000 mAhlead | 5700 mAh |
| Wired chargingⓘ | 100 Wlead | 80 W |
| Wireless chargingⓘ | 50 W | 50 W |
Connectivity
| Spec | OnePlus 13 | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | OnePlus 13 | OnePlus Open 2 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, OnePlus 13 or OnePlus Open 2?+
OnePlus 13 has 5.3% more battery — 6000 mAh vs 5700 mAh.
Which is lighter, OnePlus 13 or OnePlus Open 2?+
OnePlus 13 is 29g lighter — 210g vs 239g.
Is OnePlus 13 waterproof?+
OnePlus 13 has an IP69 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has a better camera, OnePlus 13 or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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