Updated 2026-11-08 · Based on manufacturer specs and public listings. Prices are approximate.
Too close to call on specs.
Neither model leads clearly on the performance specs we track, so price and the features that matter to you decide.
| Spec | iRobot Roomba Combo j7+ | Shark AI Ultra |
|---|---|---|
| Price (approx.) | ~$899 | ~$399 ✓ |
| Weight | 3.6 kg ✓ | 4.0 kg |
| Run time | 75 min | 180 min ✓ |
| Dustbin | 0.4 L ✓ | 0.35 L |
| Warranty | 1 year | 1 year |
| Features | Obstacle avoid, self-empty, mop | Matrix Clean, LiDAR, mop |
Leads on: weight and dustbin.
Notable: Obstacle avoid, self-empty, mop
Check current price on AmazonLeads on: price and run time.
Notable: Matrix Clean, LiDAR, mop
Check current price on AmazonOn the specs we track, neither is clearly better; the choice comes down to price and features. See the verdict and the table above for where each one leads.
iRobot Roomba Combo j7+ is about $899 and Shark AI Ultra about $399, so Shark AI Ultra is roughly $500 cheaper. Prices change often, so check the live price before buying.
iRobot Roomba Combo j7+: 1 year. Shark AI Ultra: 1 year. Check the seller's page, as warranty terms vary by country.