Litter-Robot 5 vs Litter-Robot 4
Same brand, adjacent models in the range
Whisker Litter-Robot 5
Buy now$799
Whisker lists the unit from $799; the Litter-Robot 5 Pro variant starts at $899.
List price · checked Oct 27, 2026Buy now
Whisker Litter-Robot 4
Buy now$699
Whisker lists the unit from $699; colour and bundle options raise the price.
List price · checked Oct 27, 2026Buy now
Verdict
Litter-Robot 4 has the lower list price ($699 vs $799). Neither model leads on any directional attribute both makers publish. This summary uses manufacturer-published data only; we have not tested either model.
Key differences
| Attribute | Litter-Robot 5 | Litter-Robot 4 |
|---|---|---|
| List price | $799 | $699 |
| Cleaning cycle trigger | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type | SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register) |
| Odor control method | WasteID-targeted odor control with sealed waste drawer | Sealed waste drawer with carbon filter |
Who should buy which
- The published data shows no attribute where the Litter-Robot 5 leads the Litter-Robot 4; compare the full table for differences that matter to you.
- Choose the Litter-Robot 4 if you prioritise a lower list price, based on published figures.
Where the published data differs
Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.
- Litter-Robot 4 lists at $699, $100 below Litter-Robot 5 at $799.
- Cleaning cycle trigger: Litter-Robot 5 — Weight sensor starts the cycle after the cat exits; WasteID identifies waste type; Litter-Robot 4 — SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register).
- Odor control method: Litter-Robot 5 — WasteID-targeted odor control with sealed waste drawer; Litter-Robot 4 — Sealed waste drawer with carbon filter.
Full specification comparison
| Attribute | Litter-Robot 5 | Litter-Robot 4 |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3 lbs | 3 lbs |
| Maximum cat weight | 30 lbs | Not published |
| Waste drawer capacity | Not published by either | Not published by either |
| Litter type required | Clumping clay litter | Clumping clay litter |
| Proprietary litter required | No | No |
| Proprietary waste bags required | No | No |
| Subscription required | No | No |
| Cleaning cycle trigger | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type | SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register) |
| Adjustable cycle delay | Yes | Yes |
| App control | Yes | Yes |
| Weight sensing | Yes | Yes |
| Health monitoring | Yes | Yes |
| Odor control method | WasteID-targeted odor control with sealed waste drawer | Sealed waste drawer with carbon filter |
| Entry height | Not published by either | Not published by either |
| Interior dimensions | Not published by either | Not published by either |
| Footprint | Not published by either | Not published by either |
| Operating noise | Not published by either | Not published by either |
| Power source | AC power | AC power |
| Battery backup | Not published by either | Not published by either |
| Warranty | 12 months | 12 months |