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Both units show up on Wirecutter's air fryer roundup, so the question isn't whether either is a competent machine. The question is whether you can spare the counter space the COSORI demands.
Here's the data behind that call, with the rows that matter for a small kitchen.
What matters
Ninja AF101
COSORI TurboBlaze
Winner
Why it matters
Footprint (counter space)
~8.5 x 12.1 x 11 in (4-qt, square basket) (per Consumer Reports measurements cited in our brief)
6-qt basket, the largest size in our compact picks; vendor notes it may not suit true compact kitchen needs
✓Ninja AF101
Decisive when your usable counter is under a foot wide.
Capacity vs. counter space
4 qt: roughly 1 to 2 servings before batch cooking
vs Ninja AF101 —4 qt: roughly 1 to 2 servings before batch cooking
If you cook for two and hate batching more than you hate clutter.
Noise
Ninja AF101
Wirecutter: one of the louder air fryers tested, persistent deep whoosh during operation
COSORI TurboBlaze
Not explicitly rated in our research
Loud fans carry in a studio. We have data on Ninja, not on COSORI.
Coating / PFAS status
PTFE-free nano-ceramic nonstick per Ninja customer service
vs COSORI TurboBlaze —Premium ceramic coating that contains PTFE per Wirecutter disclosure; max temp 450°F raises PFAS proximity concerns per Wirecutter
Decisive if you actively avoid PTFE for health reasons.
Crisping performance
Cooked the most fried-like results of all air fryers tested by Wirecutter, including best chicken wings; reached target temp fastest with no preheat
vs COSORI TurboBlaze —5 adjustable fan speeds for dialed-in crisping per Wirecutter; chicken wings slightly less crispy than the Ninja in side-by-side Wirecutter tests
If wings and fries are why you're buying, the Ninja's the call.
Repairability and warranty
Replacement crisper trays and baskets sold by Ninja; 1-year limited warranty
vs COSORI TurboBlaze —No replacement parts sold by COSORI; 2-year limited warranty
Replacement parts beat a longer warranty when the basket scratches in year two.
The verdict above holds for most readers in this niche, but two situations flip the answer.
By your situation
Find your situation in 10 seconds
Studio renter, no counter to spare
An ~8.5-inch wide unit fits next to a toaster. A 6-quart basket does not. Ninja's also the easiest interface Wirecutter tested across dexterity levels.
Wirecutter explicitly flagged the AF101 as one of the loudest tested. The TurboBlaze's noise isn't rated in our research, but it isn't on that loud list.
Before you click, here's what nobody can tell you yet from publicly tested data.
Is the AF101 the same as the larger Ninja AF141?
No. The AF101 is a 4-quart, 4-in-1 unit (air fry, roast, reheat, dehydrate). The AF141 is the 5-quart, 5-in-1 sibling. The AF101 is the smaller-footprint pick in Ninja's compact line.
Does the COSORI TurboBlaze come in a smaller capacity?
COSORI makes a separate 2.1-quart Lite model (CAF-LI211) for true small-kitchen use, but it's a different product line. The TurboBlaze name in our research refers specifically to the 6-quart unit.
Both run at 1500W+. Will either trip a small-apartment circuit?
The AF101 draws 1550W. Our research doesn't list the TurboBlaze's wattage. Either way, both should run on a standard 15-amp circuit, but sharing it with a microwave or kettle on the same plug strip is the failure mode to watch.
Can I make bread or proof dough in the AF101?
Not as a labeled function. The AF101 is 4-in-1 (air fry, roast, reheat, dehydrate). The TurboBlaze is 9-in-1 and includes a Proof mode for bread-making, per Wirecutter. If proofing matters, that's a real reason to pick COSORI.
Which is more likely to be on a real discount on Prime Day or Black Friday?
We can't predict pricing, but a heavily upvoted r/airfryer thread documented Amazon inflating a COSORI 9-in-1's pre-sale price to manufacture a fake discount. The community now actively price-tracks COSORI. Check CamelCamelCamel or Visualping for 30-90 day history before buying either.