Between the S8 Pro Ultra and Cube, the S8 Pro Ultra comes out ahead in ai obstacle avoidance, while the Cube wins on suction and water tank. Overall, the S8 Pro Ultra scores 57.7 and the Cube scores 61.3 on our Mars Score.
Which should you buy?
The Cube edges ahead on the Mars Score (57.7 vs 61.3), but the 3.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the S8 Pro Ultra if you care most about ai obstacle avoidance. The biggest gaps in its favor are ai obstacle avoidance.
Pick the Cube if you care most about suction and water tank. Its strongest claims are suction, water tank, noise.
Both ship with comparable mopping, lidar, battery life, 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 Roborock - S8 Pro Ultra wins
- ▲Has AI obstacle avoidance.
Why Yeedi - Cube wins
- ▲Suction — 33.33% more. 8000 Pa vs 6000 Pa.
- ▲Water tank — 27.78% more. 230 ml vs 180 ml.
- ▲Noise — 2.00 dB less. 65 vs 67.
Spec comparison
Cleaning
| Spec | Roborock - S8 Pro Ultra | Yeedi - Cube |
|---|---|---|
| Suction | 6000 Pa | 8000 Palead |
| Mopping | true | true |
| Water tank | 180 ml | 230 mllead |
| Dustbin | 400 mllead | 300 ml |
| Carpet detection | true | true |
Navigation
| Spec | Roborock - S8 Pro Ultra | Yeedi - Cube |
|---|---|---|
| Lidar | true | true |
| Camera navigation | truelead | false |
| AI obstacle avoidance | truelead | false |
| Max climb | 20 mm | 20 mm |
Autonomy
| Spec | Roborock - S8 Pro Ultra | Yeedi - Cube |
|---|---|---|
| Battery life | 180 min | 180 min |
| Self-empty base | true | true |
| Self-wash mop | true | true |
| Self-dry mop | true | true |
| Noise | 67 dB | 65 dBlead |
Frequently asked
Which has stronger suction, S8 Pro Ultra or Cube?+
Cube delivers 8000 Pa vs 6000 Pa.
Do S8 Pro Ultra or Cube mop?+
Both can mop.
Which has a self-emptying base, S8 Pro Ultra or Cube?+
Both ship with a self-emptying base.
Spec-level deep dives
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