Litter-Robot 5 Pro: The AI Mistook Two Cats for One

A 13.4-Pound Cat "Lost" 2 Pounds Overnight

Looking only at the numbers in the app, it seemed like an emergency. Smokey, a gray-and-white tabby, appeared to have lost 2 pounds overnight. He wasn't on a diet, and he wasn't sick. The $899 robotic litter box had mistaken his smaller sibling, Boone, for him, and pasted the younger cat's weight into the older cat's record. A week later, the machine still hadn't corrected itself, and two cats who looked nothing alike had become identical twins inside the app.

The Verge's Jennifer Pattison Tuohy used Whisker's flagship model, the Litter-Robot 5 Pro, at home for six months. Her conclusion was clear: it handles waste disposal brilliantly, but the AI that justifies the higher price tag simply doesn't work.

What a Robot Litter Box Actually Is

A litter robot is a machine that clears cat waste so humans don't have to. The mechanism is simple. A cat enters a large spherical chamber filled with litter, sensors detect its weight and movement, and after the cat leaves, a drum rotates to sift out solid waste and drop it into a sealed drawer below. What used to require scooping twice a day becomes a once-a-week drawer emptying. Most of the odor stays contained inside.

On these basics alone, the 5 Pro excels. It weighs cats with a built-in scale, can be operated remotely via app, and its LCD screen displays plain-text status updates on what it's currently doing — a major improvement over the cryptic LED indicators on the Litter-Robot 4. It's also nearly silent; the reviewer tested the entry-level Evo model in her daughter's room and never once had her sleep disrupted by noise or smell. However, the 5 Pro is bulky, taking up roughly the footprint of a side table, and needs to be near an outlet.

Why Cat ID Merged Two Cats Into One

The 5 Pro costs $100 more than the standard Litter-Robot 5 mainly because of its two cameras. A front-facing camera recognizes the face of any cat entering the box and automatically attaches that visit to the correct cat's profile. Whisker calls this feature Cat ID and states it can distinguish up to five cats.

In practice, after about a week of use, the app prompts a PawPrint setup screen, asking the user to manually select the clearest photos the camera has captured of each cat. For the reviewer, every candidate photo was blurry and awkwardly framed. From then on, the machine repeatedly confused a large gray tabby with a small, sleek tuxedo cat, eventually merging them into a single profile.

Whisker explained that poor lighting or weak initial registration images can throw off the camera, and that when confidence is low, the system falls back on other signals like the built-in scale. In a statement to The Verge, the company said it had "improved the registration process to more selectively choose images used for facial recognition." It also sells a separate $29 RFID tag for cats with similar appearances. But many households don't put collars on their cats, and it's hard to justify why a machine costing nearly $900 needs an extra paid accessory to tell apart two cats that look obviously different to the naked eye.

WasteID and Cameras — Marketing vs. Reality

Another marquee feature is WasteID, which claims to distinguish urine from feces and prioritize clearing the smellier waste faster. Over six months, this feature consistently failed to correctly identify waste type, and often couldn't even produce a weight reading for each deposit.

Whisker said the unit's gas sensor for detecting solid waste was miscalibrated and remotely recalibrated it. When that didn't help, the company then suggested the scale itself might be faulty. A scale problem would also explain why WasteID and PawPrint broke down simultaneously — but fixing it would require replacing the entire unit.

The cameras also underdelivered relative to their marketing. Advertising suggests both cameras record footage, but in reality only the front-facing camera — which captures cats entering — actually records video. The interior camera only offers a live view; over six months, the reviewer caught an actual waste event on camera exactly once. The company says interior recording is "coming soon." The cameras weren't entirely useless, though — when "cycle interrupted" or obstruction alerts came in, the reviewer could remotely check whether a cat was trapped inside.

Placement matters more than expected. It took the reviewer about a week to realize the front camera was also recording people using the bathroom across the hallway. There's an option to record only when a cat is detected, but cats love following their owners into the bathroom.

What Does $8 a Month Actually Buy?

The AI health features and video storage are bundled into an $8/month subscription called Whisker Plus. Catching early signs of trouble in aging cats was the biggest selling point for buying this machine — but over six months, the subscription delivered no actionable insights.

A recently added feature called Patterns is at least a step in the right direction, generating daily summaries per cat — for example, that Smokey weighed 12.52 pounds yesterday, used the box once for a total of 0.9 minutes, and everything was within normal range. Weight readings are still consistently too light, and waste-type information is missing entirely. The bigger issue is that Patterns and other key improvements only arrived months after launch. In the meantime, 5 Pro buyers paid $8 a month for features that didn't work.

Which of the Four Models Should You Buy?

Model	Price	Camera/AI	Notable Limitations
Litter-Robot Evo	$599	None	No litter-level monitoring or night light, small bin, only for fewer/smaller cats, no litter hopper support, drawer doesn't close well
Litter-Robot 4	$699	None	LED indicators are unintuitive
Litter-Robot 5	$100 less than 5 Pro	No camera, includes WasteID	No facial recognition
Litter-Robot 5 Pro	$899	Dual cameras + Cat ID + WasteID	AI features fail in real-world use, $8/month subscription required separately

The reviewer's recommendations fall into three camps. If you have a large cat weighing up to 30 pounds, manage up to five cats together, or want the cameras purely as a safety monitor, the 5 Pro still earns its keep. Otherwise, save $100 and get the camera-free Litter-Robot 5. If you don't care about WasteID tracking and have four or fewer cats, the $699 Litter-Robot 4 with no AI at all is the safest bet. The reviewer didn't recommend the cheapest Evo model unless space is truly tight — its build quality felt flimsy and prone to errors, including repeated false alerts claiming the bonnet had come loose. Whisker said this, too, was likely a hardware issue specific to that unit.

The Machine Is Good; the Intelligence Isn't Ready Yet

In summary, the Litter-Robot 5 Pro is a better waste-removal machine than its predecessors — bigger bin, roomier dome, more intuitive controls. The problem lies in what justifies the $200 premium and $8 monthly fee: the cameras and algorithms, which fall apart in real home environments. Recognition models that perform well in a lab behave very differently in an actual living room, with dim lighting, cats darting past in an instant, and people wandering into frame. If you buy this product today, judge it by what actually works right now — not by promised future features.

Editor's Take

Though framed as a review of a litter box, this piece is effectively a diagnosis of the entire smart-home industry heading into 2026. Take a machine that already runs fine on sensors and motors, bolt on two cameras and a classification model, raise the price by $200, then attach a monthly subscription on top — this exact pattern is now repeating across doorbells, air purifiers, robot vacuums, and baby monitors. The hardware is already mature; the "intelligence" layered on top is what generates margin. The problem is that the bill arrives before that intelligence has been verified.

Ironically, the generational gap ran in the opposite direction from what you'd expect. The Litter-Robot 4, with zero AI, won't disappoint anyone six months down the line. The 5 Pro, by contrast, created new labor for its users — correcting misassigned visit logs, resetting profile weights, fixing video logs. The entire point of buying such a machine is to eliminate labor; the moment an AI feature creates labor instead, that feature is a net negative. Whenever a recognition model built for appliances is deployed in an actual home, the conclusion tends to be the same: 90% accuracy looks great on a spec sheet, but on a device used ten times a day, it means getting it wrong once daily. And people don't trust a machine that's wrong once a day.

There are three lessons for domestic teams to take away. First, if individual identification is going to be a flagship feature, letting users pick their own registration photos is already a losing design — if every photo a user can choose from is blurry, that's a pipeline problem, not a user problem. Second, if AI features are going to be bundled into a subscription, billing should only begin once those features are confirmed to actually work. Shipping key improvements months after launch while charging fees the whole time erodes brand trust far more than it invites refund requests. Third, the most alarming part of this story is that a single faulty scale broke both facial recognition and waste classification simultaneously. When multiple AI features all depend on one shared sensor, the moment that sensor goes wrong, the entire product starts lying. A design that can detect its own sensor failure and flag a feature as "undeterminable" and pause is always better than one that fills gaps with guesses.

What happens next isn't hard to predict. Whisker will likely expand Patterns and roll out interior camera recording to quiet early buyers' complaints. But even with those updates, the core lesson here doesn't change: don't buy hardware based on promised future updates. What works the moment you open the box is the only thing you actually bought.