Litter-Robot 5 vs Litter-Robot 4 (2026) — Should You Upgrade?

Head-to-head comparison: Litter-Robot 5 vs Litter-Robot 4. WasteID health tracking, larger interior, LCD screen — is the $799 upgrade worth $100 more than the proven $699 LR4?

How we compare: We analyze verified owner reviews and product specs — learn more about our research process

Key Takeaways

Winner: The Litter-Robot 5 wins for new buyers — the $100 premium over the LR4 buys WasteID health tracking,...
Litter-Robot 5 — $799 | 4.6★
Litter-Robot 4 — $699 | 4.5★
10 features compared head-to-head

Bottom Line

"The Litter-Robot 5 wins for new buyers — the $100 premium over the LR4 buys WasteID health tracking, a larger globe, a readable LCD screen, carpet-friendly design, and a platform that will receive firmware updates for years. The LR4 wins for budget-conscious buyers or anyone upgrading from an older model — it's still an excellent box at $699 with 12,500+ reviews and proven long-term reliability. If you have a cat with health concerns (diabetes, kidney disease, FLUTD), the WasteID #1 vs #2 tracking alone justifies the LR5. If you have healthy cats and just want to stop scooping, the LR4 at $100 less is the smarter buy."

Litter-Robot 5

by Whisker

$799

~$22/mo over 3 years

Pros

✓ WasteID health tracking

✓ Larger interior than LR4

✓ No carpet kit needed

✓ Up to 5 cats

Cons

× $799 price

× WiFi 2.4GHz only

× New, fewer reviews than LR4

View on Amazon

Litter-Robot 4

by Whisker

$699

~$19/mo over 3 years

Pros

✓ Best-in-class odor control

✓ Large waste drawer

✓ Excellent app

✓ Works for up to 4 cats

Cons

× Expensive

× Large footprint

× Requires proprietary liners

View on Amazon

Feature Comparison

Feature	Litter-Robot 5	Litter-Robot 4
Price	$799	$699
Health Tracking	WasteID: #1 vs #2 detection	Weight tracking only
Screen	Full-color LCD display	LED light bar only
Interior Size	Larger globe, more headroom	Standard globe
Cat Capacity	Up to 5 cats by weight	Up to 4 cats by weight
Carpet Use	Built-in carpet compatibility	Requires $30 carpet tray kit
Noise Level	Under 55 dB (QuietSift)	~40 dB
Warranty	1 year	1 year
Reviews	850+ (new model)	12,500+ (proven)
Best For	Health-conscious / multi-cat homes	Budget / proven reliability

Frequently Asked Questions

Is WasteID on the LR5 actually useful?

If your cat has diabetes, kidney disease, or FLUTD — yes, extremely useful. Knowing whether your cat is peeing more or less than normal is an early warning system for these conditions. For healthy cats, WasteID is a nice-to-have, not a must-have. Whisker claims ~70% accuracy distinguishing #1 from #2, improving with firmware updates.

Should I upgrade from LR4 to LR5?

Only if: (1) your cat has health issues that WasteID would help track, (2) your large cat seems cramped in the LR4, or (3) you really want the LCD screen and carpet compatibility. If your LR4 works fine and your cat is healthy, the upgrade isn't compelling — the core experience (auto-sifting, odor control, app alerts) is very similar.

Which one is quieter?

The LR4 runs at ~40dB. The LR5 is rated 'under 55dB' for its QuietSift mode. In practice, both are quiet enough that you won't notice them over household background noise. The LR4 is technically quieter, but the difference is negligible in real-world use.

Does the LR5 require proprietary supplies like the LR4?

Neither requires proprietary litter — both work with any clay-clumping litter. Both use carbon filters ($25/pack) and waste drawer liners. The LR5's LitterHopper accessory is not backward-compatible with the LR4, and the LR4's LitterHopper doesn't work with the LR5. If you're invested in LR4 accessories, upgrading means replacing those too.

Which one is right for you?

Litter-Robot 5 by Whisker $799 View on Amazon Litter-Robot 4 by Whisker $699 View on Amazon

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