As an Amazon Associate, The Counter Lab earns from qualifying purchases. We don’t do hands-on testing and we don’t accept free units. Everything below is compared on manufacturer pages and official manuals we opened ourselves plus prices we read on opened retailer pages — each price stamped with the store and the date we read it, because prices move and the number at checkout is the one that counts.

A small kitchen doesn’t care about watts-per-quart marketing. It cares about two numbers: how much counter the appliance’s footprint eats, and whether it fits under your cabinets. For this slice we filtered our catalog to compact models whose dimensions are actually published on the manufacturer page or manual — then computed each one’s counter footprint so you can compare them on the one metric small kitchens live by.

The models we’re comparing

Three compact picks, all spec-verified this week: the Cosori Lite 4.0-Qt Smart (CAF-LI401S-AUS) — $99.99 at Cosori.com, read Oct 7, 2026; the Ninja Air Fryer Pro 4-in-1 (AF141) — $99.99 (list $129.99) at SharkNinja.com, read Oct 7, 2026; and the Cosori TurboBlaze 6.0-Qt (CAF-DC601) — $89.99 at Cosori.com, read Oct 7, 2026. Smallest to largest footprint: the Lite at ~147 sq in, the Ninja at ~168 sq in, the TurboBlaze at ~170 sq in.

Head-to-head

Reading note: the footprint row is simple arithmetic on the published dimensions — width times depth, from the numbers each brand printed on its own spec block. That multiplication is ours; the dimensions aren’t. “Not published” would appear instead of a number anywhere the brand didn’t publish one — we never borrow a dimension from a review site or an Amazon spec table.

What the footprint numbers actually tell you

Three facts worth more than any of the marketing copy. First, capacity does not track footprint: the Lite’s 4 qt eats ~147 sq in of counter while the TurboBlaze’s 6 qt — 50% more basket volume — eats ~170 sq in. If counter space is the binding constraint, the Lite wins outright; if the binding constraint is feeding 3–4 people, the TurboBlaze’s extra 2 qt cost you only ~23 sq in of counter.

Second, height matters as much as footprint. Standard wall cabinets hang about 18 in above the counter, but under-cabinet lighting, plugs, and low shelves compress that fast. The Ninja’s published 10.55-in height is the lowest of the three — the one you’d pick for a galley kitchen with cabinets that start at 14 in. But note the honest trade: that low height comes with the lowest published max temperature in this comparison (400°F vs 450°F on both Cosoris) and a 1-year warranty vs Cosori’s 2-year.

Third, depth is the number that decides whether the unit actually sits on your counter or hangs off it. The Lite’s published 10.8-in depth is the shallowest here — relevant for narrow apartment counters where a 14.4-in-deep TurboBlaze plus its handle would overhang the edge.

Honest strength of the Cosori side: documentation and warranty. Both Cosori picks publish the full spec block — dimensions, weight, wattage, temp range, functions — and both carry the 2-year limited warranty, the longest in this comparison. Honest strength of the Ninja side: the lowest profile and the highest wattage under $100 (1,750 W). If your cabinets hang low and you cook at modest temperatures, the AF141 is the shape built for that kitchen.

Verdicts by case

• Every square inch counts: the Cosori Lite 4.0-Qt Smart ($99.99, Cosori.com, Oct 7 2026). The smallest verified footprint (~147 sq in), the lightest (9 lb), the shallowest depth (10.8 in) — and the only sub-$100 pick here with app control. Honest trade: 4 qt is a 1–2 person basket, not a family one.
• Cabinets hang low over the counter: the Ninja Air Fryer Pro 4-in-1 ($99.99, SharkNinja.com, Oct 7 2026). 10.55 in tall is the lowest published height of the three, and 1,750 W is the most power in the group. Honest trade: 1-year warranty, and the published temp ceiling is 400°F.
• You want small-kitchen fit without shrinking the basket: the Cosori TurboBlaze 6.0-Qt ($89.99, Cosori.com, Oct 7 2026). A full 6 qt in ~170 sq in of footprint, the widest published temp range here (90–450°F), 9 functions, 2-year warranty — and the cheapest of the three. Honest trade: 14.4-in depth is the deepest here; measure your counter edge.
• You want even smaller and cheaper: the Cosori Lite Mini 2.1-qt ($59.99 at Cosori.com, read Oct 7, 2026) is the smallest capacity in our entire air-fryer catalog — but Cosori’s page didn’t publish dimensions for it, so we can’t put it on the footprint table and we don’t rank it. Honest note, not a recommendation.

Check the Cosori TurboBlaze 6.0-Qt on Amazon

How we compared

All dimensions, capacities, wattages, temp ranges, and warranties come from the manufacturer spec blocks (cosori.com, SharkNinja) we opened and read on Oct 7, 2026. Footprint figures are our own multiplication of those published dimensions — never borrowed from a review site or an Amazon spec table. Prices are our own dated reads on opened retailer pages. We don’t do hands-on testing and we don’t accept free units. Amazon links appear only for models whose ASINs we confirmed against the exact model number: B0C33CHG99 (CAF-DC601 TurboBlaze).

Next step: see the full ranked picks in our best air fryers guide, browse every spec-checked model on the air fryers hub, or read air fryer sizes explained if you’re still choosing the right capacity class.