The Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera changed what people expect from an advanced yet accessible smart litter box. With a larger entry, a full AI health-monitoring suite, and self-cleaning that runs for over two weeks without you touching it, it quickly became one of PETKIT's most popular litter boxes — proof that "smart" and "accessible" don't have to be opposites.
We didn't stop there. The Purobot Ultra Automatic Litter Box takes that same AI foundation and pushes the automation one full step further, with a fully self-packing waste system and advanced odor control, removing the very last manual task left in the routine. Two genuinely excellent litter boxes, built on the same intelligent core, aimed at two slightly different ideas of what "hands-free" should mean. Let's look at what sets them apart — and where each one truly shines.
At a Glance
| Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera | Purobot Ultra Automatic Litter Box | |
| Entry size | 10.51" x 10.74" — 43% larger than PETKIT's previous generation | 9.84" x 8.54" |
| Entry height | 10.03" | 10.43" |
| Drum capacity | 76L | 70L |
| Waste bin | 8L — up to 17 days hands-free (1 cat) | 10L — up to 20 days hands-free (1 cat) |
| Waste packing | Contactless drawstring — a quick pull seals the bag | Fully automatic — seals the bag and loads a fresh one on its own |
| Camera & audio | Fixed, 210° wide-angle, 1080p HD, IPX5 waterproof — one-way audio | 180° rotating camera — two-way audio |
| Safety design | Anti-pinch structure with integrated safety sensors | Anti-pinch structure with integrated safety sensors |
| Odor control | Multi-layer odor system — enclosed drum containment, sealed airtight bin, N50 + N60 Odor Eliminators | Multi-layer odor control system — sealed trunk lid, odor eliminator N60, auto-sealed waste bin door & leak-proof trash bag |
| Multi-cat recognition | AI camera facial recognition + weight sensors, up to 15 cats | AI camera facial recognition + weight sensors, up to 15 cats |
| Health insights | Urine pH detection, yowling detection, stool monitoring, inactivity alerts | Urine pH detection, yowling detection, stool monitoring, inactivity alerts |
| Wi-Fi | 2.4GHz / 5GHz | 2.4GHz / 5GHz |
| Cat weight limit | 3.3–22 lbs | 3.3–22 lbs |
| Noise level | 35dB |
35dB |
Prices and promotions change frequently — check each product page for today's pricing.
The AI health-monitoring core — facial recognition, urine pH tracking, yowling and stool image capture — is identical on both units. That's intentional: PETKIT built both litter boxes on the same intelligent platform. The real differences live in how each one handles litter box maintenance — and each one, as you'll see below, was built to lead in a different way.
Where the Purobot Max Pro 2 Leads: Entry Size and Odor Control
Two things set the Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera apart, and they both come down to design priorities PETKIT built this generation around from the start.
The Entry: More Room to Move
PETKIT specifically re-engineered this generation with a 43% wider opening (10.51" x 10.74"), designed with large-breed cats, senior cats, and short-legged cats in mind — cats who need to step in and turn around without ducking or twisting. The Purobot Ultra Automatic Litter Box, at 9.84" x 8.54", trades some of that entry width for the internal space its more complex auto-packing mechanism requires.
If you have a big Maine Coon, an arthritic senior cat, or a cat who has ever hesitated at the doorway of an automatic box, the entry on the Purobot Max Pro 2 is the more comfortable everyday experience, and a great example of how PETKIT designed this generation specifically around real-world comfort, not just headline features.
Odor Control: The Dedicated Specialist
This is the other place the Purobot Max Pro 2 pulls ahead — and it does so by a meaningful margin. Odor control is a core design priority for this model, built by layering multiple defenses on top of each other:
- The enclosed drum design keeps odor contained within the drum during rotation, trapping smell before it ever reaches the room.
- Waste then moves into a sealed side bin with an airtight cover that closes behind it, locking odor at the source for as long as the cycle runs.
- Stationed directly beside the bin, the N50 Odor Eliminator neutralizes up to 98% of ammonia — the compound behind that sharp, immediate smell — before it has any chance to escape.
- Inside the drum, the N60 Smart Odor Eliminator purifies the air from within, leaving the space fresh for the next visit.
Where the Purobot Ultra Leads: Hands-Off Waste Disposal and a Camera That Talks Back
The flagship earns its price in two ways of its own — both centered on removing even more of the manual routine than the Purobot Max Pro 2 already does.
Fully Automatic Waste Packing
This is the single feature that most defines the Purobot Ultra experience. Both litter boxes seal waste into a bag the moment your cat leaves, so scooping is never part of your routine — but how each one finishes the job is genuinely different:
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Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera: once waste is sealed inside the bin, you pull a drawstring yourself when it's time to empty it. Your hands never touch waste, but you're still the one closing the loop.
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Purobot Ultra Automatic Litter Box: the system seals each bag and automatically feeds a new one into place, with no action required from you between cycles. You only step in when the entire bin needs to be swapped for a fresh one — not after every visit.
For multi-cat households or anyone who'd rather never think about tying off a bag, this is where the Purobot Ultra earns every bit of its flagship position. For a single-cat home, the drawstring pull on the Purobot Max Pro 2 is quick, genuinely sanitary, and easy to build into a routine.
A Camera That Talks Back
The Purobot Max Pro 2 uses a fixed 210° wide-angle lens — broad enough to capture the entire cylinder interior in one frame without needing to move — paired with one-way audio that listens for sounds like yowling.
The Purobot Ultra goes a step further on both counts: its 180° rotating camera physically swivels to view either the litter box interior or the surrounding room, and its two-way audio actually lets you talk back through the device — a genuinely nice touch if you like checking in on your cat with your own voice, not just watching from afar.
Both Boxes Put Safety First
Rather than one model simply having "more" safety features than the other, both the Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera and the Purobot Ultra Automatic Litter Box are built around the same safety-first philosophy: an anti-pinch structure with integrated safety sensors that immediately halts the cleaning cycle the moment a cat approaches. Whichever one you choose, your cat's safety around the moving parts is treated as a non-negotiable baseline, not a feature you have to pay more to get.
Worth Knowing About Both Boxes
Both litter boxes share the same underlying AI camera platform, so this applies equally to either one: facial recognition becomes more accurate over the first couple of weeks as the system learns each cat's face, and the stool-monitoring feature works by capturing a reference photo for you to compare visually in the app, rather than issuing an automatic diagnosis. Think of the health-tracking suite on both models as a genuinely useful early-warning layer — one that helps you notice a change sooner — rather than a substitute for regular vet checkups.
Which One Fits Your Home?
The Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera is an excellent fit if:
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Odor control is a top priority: The OdorVoid™ Defense System combines an enclosed drum, an airtight waste bin, and dual N50 + N60 Odor Neutralizers to trap and neutralize smells at every stage.
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You have a large-breed, senior, or short-legged cat: The extra-wide, low-step entry ensures easy access and maximum everyday comfort.
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You don't mind a quick manual clean-up: A single, contactless pull of the drawstring seals the waste bag cleanly and effortlessly.
- You want an accessible entry point to AI health tracking: Get access to the AI health-monitoring suite in a feature-packed, high-value model.
The Purobot Ultra Automatic Litter Box is an excellent fit if:
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You want maximum odor control: The multi-layer OdorVoid™ system pairs a sealed top cover, a 60-day N60 cartridge, an auto-sealing bin door (blocking 97.5% of odors), and leak-proof trash bags to lock away smells completely.
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You want a truly hands-off cleaning routine: Auto-packing and auto-bagging automate waste disposal end-to-end, pairing with an automated self-cleaning cycle so you never have to touch a bag or scoop.
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You want advanced health monitoring & live interaction: Track urine pH, yowling, and stool wellness while using the 180° rotating camera and two-way audio to check in on your cat and talk to them in real time.
- You manage a multi-cat home: Effortlessly track multiple cats while enjoying up to 20 days of zero daily waste maintenance thanks to the expanded 10L waste capacity.
Both litter boxes run on the exact same intelligent core — the same facial recognition, the same urine pH tracking, the same yowling and stool image capture, the same safety-first anti-pinch design. You're never choosing between "smart" and "less smart" here. You're choosing between PETKIT's dedicated odor-control flagship with the widest entry we've ever built and the closest thing to a fully automatic, hands-off litter box PETKIT makes today. Either choice puts a genuinely excellent, AI-powered litter box in your home.
FAQ
If I switch from the Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera to the Purobot Ultra Automatic Litter Box later, will I lose my cat's health history?
No — each cat's profile and history live in your PETKIT App account rather than on the physical device, so upgrading hardware doesn't erase your records.
Does the larger entry on the Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera mean it needs more floor space overall?
No — the wider entry comes from a redesigned opening shape, not a larger footprint. Check the exact dimensions on each product page to confirm fit for your space.
If I have two cats, do I still need more than one litter box regardless of which model I pick?
Yes. Both models support facial recognition and tracking for up to 15 individual cats sharing one unit, but general litter box guidance (one box per cat, plus one extra) still applies for behavioral reasons — the AI camera helps you monitor multiple cats using a shared box, but it doesn't replace having enough boxes.
Which one is quieter?
Both operate around 35dB — quiet enough for a bedroom — with no meaningful difference between them.
Ready to see which one fits your home? Shop the Purobot Max Pro 2 Automatic Cat Litter Box with AI Camera or Shop the Purobot Ultra Automatic Litter Box.
