Verdict
Head-to-head · Best Toaster Ovens

Breville Joule Smart Oven Air Fryer Pro vs Ninja Flip SP151

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Ninja Flip SP151 comes out ahead by a narrow margin (4.2 vs 4.0). Ninja Flip SP151 is best for: Small kitchens seeking a versatile oven that can be stored vertically against a backsplash. Read the strengths below before deciding.

Breville Joule Smart Oven Air Fryer Pro
Ranked #4 in Best Toaster Ovens
Breville Joule Smart Oven Air Fryer Pro
3 sources$549.95as of Oct 24

The Breville Joule Smart Oven Air Fryer Pro utilizes Element IQ technology and six quartz elements to deliver precise, even heating across its 13 preset functions. WIRED found that the companion app’s Autopilot mode automates complex recipes like whole-roasted chicken by cycling through temperatures exceeding 450 degrees Fahrenheit and low warming settings without manual intervention. Bon Appétit noted that this system adjusts heat sources automatically, resulting in reliable performance that often surpasses full-size residential ranges despite occasional software recipe errors. However, the appliance lacks an integrated food probe thermometer, requiring users to rely on external devices for meat doneness checks. Its premium pricing reflects high-end build quality and smart features, making it a strong fit for tech-savvy cooks with limited counter space who value automation over basic functionality.

Strengths
  • — The Breville+ app features an Autopilot mode that automatically adjusts temperature and cooking modes during recipes, such as cycling through broil and warming settings for a whole chicken.
  • — Element IQ technology uses built-in sensors to intelligently distribute heat across six quartz elements for precise and stable cooking results.
  • — The oven includes 13 preset functions including toast, bake, roast, air fry, dehydrate, slow cook, proof, and keep warm.
Watch-outs
  • — Lacks an integrated food probe thermometer, requiring users to rely on external thermometers for meat doneness checks.
  • — The appliance is relatively expensive.
Ninja Flip SP151
Higher ratedRanked #3 in Best Toaster Ovens
Ninja Flip SP151
2 sources$249.95as of Oct 24

The Ninja Flip SP151 utilizes an 1800-watt OvenCrisp system that preheats in under 60 seconds, allowing it to air fry and bake with even browning across its spacious interior. RTINGS found the flip-up storage mechanism innovative for reclaiming counter space, though Theairfryerinsider noted the unit requires a wall or backsplash for stable vertical positioning. A shallow chamber height limits the ability to cook tall items like whole chickens, as Kitchadvisor confirmed the top heating elements sit too close for bulky roasting tasks. Plastic-reinforced construction feels lighter than all-metal competitors, and while it suits small kitchens seeking versatility, users needing deep capacity or premium build quality should look elsewhere.

Strengths
  • — Flip-up storage mechanism reduces countertop footprint by approximately 50% when stored vertically against a backsplash
  • — 1800-watt OvenCrisp heating system preheats in under 60 seconds for rapid meal preparation
  • — Spacious interior accommodates a 12-inch pizza or up to 4 pounds of ingredients
Watch-outs
  • — Shallow interior height limits the ability to cook tall items like whole chickens or large loaves of bread
  • — Plastic-reinforced construction feels lighter and less premium than all-metal competitors
  • — Requires a wall or backsplash behind the unit for stable vertical storage

How they stack up

Breville Joule Smart Oven Air Fryer Pro

This model distinguishes itself from the Breville Compact Smart Oven by offering an app-controlled Autopilot mode for complex recipes, whereas the Compact relies on manual presets. It also provides more precise heat distribution via six quartz elements compared to the four independent elements in The Smart Oven BOV800XL, though it lacks the integrated food probe found in some competitors.

Ninja Flip SP151

The Ninja Flip SP151 utilizes a flip-up storage mechanism that reduces its countertop footprint by approximately 50%, offering superior space-saving capabilities compared to the stationary Breville Compact Smart Oven.

Specs side-by-side

SpecBreville Joule Smart Oven Air Fryer ProNinja Flip SP151
Functions138-in-1 (Air Fry, Roast, Broil, Bake, Pizza, Toast, Bagel, Dehydrate)
Heating Elements6 Quartz Elements6 infrared heating elements
Dimensions21.4" W × 17.3" D × 12.7" H17.01"D x 15.75"W x 7.68"H
MaterialStainless Steel—
Capacity—12-inch pizza or 4 lbs of food
Power—1800 W
Display—digital display
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