Petkit Purobot Max Pro 2 vs Whisker Litter-Robot 5 Pro

The LR5 Pro costs $899. The Purobot Max Pro 2 costs $441–$560. That's not a small gap — that's a second automatic litter box, or two years of subscription fees. What makes this sting for Whisker is that the Purobot's camera is arguably superior: 1080p, 210-degree wide angle, night vision, and audio recording versus the LR5 Pro's dual cameras that Good Housekeeping flagged for accidentally recording humans. You're paying more and getting a privacy concern as a bonus.

The LR5 Pro's ability to distinguish up to 5 cats within 1 lb of each other is a genuine technical achievement — most systems fail when cats are close in weight. The Purobot's AI recognition works well too, but loses reliability once the free Care+ subscription expires, which is a real gotcha. If you have a 10 lb and an 11 lb cat you need to tell apart, the LR5 Pro is the only box that can do it. For everyone else, the Purobot's recognition is sufficient.

The LR5 Pro detects whether your cat deposited solid or liquid waste and adjusts the cleaning cycle timing accordingly — solids get more dwell time, liquids cycle faster. This isn't a gimmick: for cats prone to UTIs or kidney disease, tracking liquid-only visits is an early warning system. The Purobot has no equivalent. If you have a cat over 10 years old or with a history of urinary issues, this single feature might justify the price difference.

Neither box is truly subscription-free. The Purobot's Care+ runs $4–$12/month and its cat recognition becomes unreliable without it — that's a hidden cost baked into a box you already paid $500 for. The LR5 Pro's Whisker+ is $8/month or $80/year for livestream and video history. Over three years, you're looking at $144–$432 extra for the Purobot and $240 for the LR5 Pro. Factor this in before you decide the Purobot is the obvious budget winner.