iRobot Roomba Combo i5 vs Roborock S8 Pro Ultra
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AI Matrix
Powered by Claude AIRoborock S8 Pro Ultra edges out the iRobot Roomba Combo i5 in the robot vacuums category, especially in performance, scoring 54 vs 43. If you want the better overall robot vacuums, Roborock S8 Pro Ultra is the recommended choice.
3 Reasons Why Roborock S8 Pro Ultra Is Better
- 1.Lower price: $175 vs $175.99
- 2.Better performance score: 45 vs 9
- 3.Higher overall score: 54 vs 43
What are you giving up?
Picking Roborock S8 Pro Ultra over iRobot Roomba Combo i5 means trading these off.
You give up
- −1800g lighter (3200g vs 5000g)
- −Larger battery: 5,200mAh vs 5,000mAh
- −Longer battery life: 2.5h vs 2h
You gain
- +$1 cheaper ($175 vs $175.99)
Spec Comparison
iRobot Roomba Combo i5Roborock S8 Pro Ultra
Score Breakdown
iRobot Roomba Combo i5Roborock S8 Pro Ultra
93
Price20% weight
93Tie
9
Suction30% weight
45Roborock S8 Pro Ultra Winner
1
Battery Life25% weight
0Tie
78
Navigation15% weight
78Tie
100
Features10% weight
100Tie
Scores are relative within the robot vacuumscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
iRobot Roomba Combo i5
✓ Pros
- ●Bigger battery: 5,200mAh vs 5,000mAh
- ●Longer battery life: 2.5h vs 2h
- ●Lighter build: 3200g vs 5000g
✗ Cons
- ●Higher price: $175.99 vs $175
- ●Lower performance score
Roborock S8 Pro Ultra
Winner✓ Pros
- ●Lower price: $175 vs $175.99
- ●Higher performance score
- ●Water resistant (IP68)
✗ Cons
- ●Smaller battery: 5,000mAh vs 5,200mAh
- ●Shorter battery life: 2h vs 2.5h
Spec Comparison
| Spec | iRobot Roomba Combo i5 | Roborock S8 Pro UltraW |
|---|---|---|
| Price | 175.99$ | 175$✓ |
| Battery | 5200mAh✓ | 5000mAh |
| Battery Life | 2.5hrs✓ | 2hrs |
| Bluetooth | 5.0 | 5.0 |
| Wi-Fi | true | true |
| Water Resistance | — | IP68 |
| Weight | 3200g✓ | 5000g |
| Colors | Black, White | Black, White |
Who Should Buy
Buy iRobot Roomba Combo i5 if…
The iRobot Roomba Combo i5 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy Roborock S8 Pro Ultra if…
Buy the Roborock S8 Pro Ultra if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
iRobot Roomba Combo i5 vs Roborock S8 Pro Ultra — FAQ
iRobot Roomba Combo i5 vs Roborock S8 Pro Ultra: which is better?
Roborock S8 Pro Ultra edges out the iRobot Roomba Combo i5 in the robot vacuums category, especially in performance, scoring 54 vs 43. If you want the better overall robot vacuums, Roborock S8 Pro Ultra is the recommended choice.
Is iRobot Roomba Combo i5 better than Roborock S8 Pro Ultra?
No, Roborock S8 Pro Ultra scores higher (84 vs 47).
Which is cheaper, iRobot Roomba Combo i5 or Roborock S8 Pro Ultra?
Roborock S8 Pro Ultra is cheaper at $175 vs $175.99 for the iRobot Roomba Combo i5.
Who should buy the iRobot Roomba Combo i5?
The iRobot Roomba Combo i5 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Who should buy the Roborock S8 Pro Ultra?
Buy the Roborock S8 Pro Ultra if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Which has better battery life, iRobot Roomba Combo i5 or Roborock S8 Pro Ultra?
iRobot Roomba Combo i5 has a larger battery (5,200mAh vs 5,000mAh for the Roborock S8 Pro Ultra), which generally means longer use between charges.
Which lasts longer, iRobot Roomba Combo i5 or Roborock S8 Pro Ultra?
iRobot Roomba Combo i5 lasts longer with 2.5 hours vs 2 hours for the other.
Which is lighter, iRobot Roomba Combo i5 or Roborock S8 Pro Ultra?
iRobot Roomba Combo i5 is lighter at 3200g vs 5000g.
Related Comparisons
Full iRobot Roomba Combo i5 review →Full Roborock S8 Pro Ultra review →All iRobot Robot Vacuums →All Roborock Robot Vacuums →
Reviewed by VersusMatrix Editorial Team
Last updated: April 28, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.