Ninja SP351 vs SP151: Which One Should You Buy?

Countertop ovens have become a must-have in busy U.S. kitchens, and Ninja’s flip-up designs are some of the most popular. Two models that often get compared are the Ninja SP351 and the Ninja SP151. At first glance, they look alike with their stainless-steel build and space-saving design.

But when you look closer at things like heating technology, cooking functions, and cleaning, the differences stand out. In this guide, I’ll go over what they share, where they differ, and which one might fit your kitchen best.

Winner Purchase Link: Ninja sp351 Toaster Oven Air Fryer Combo

Ninja SP351 vs SP151: Similarities

Flip-Up Space-Saving Design

Both the Ninja SP351 and SP151 have the signature flip-up feature. This lets you stand the oven upright against your backsplash when not in use, saving counter space. Many U.S. buyers mention this as a game-changer for apartments or smaller kitchens.

Multi-Function Cooking

Neither oven is just a toaster. Both can air fry, roast, bake, broil, toast, dehydrate, and more. Whether you want crispy fries, fresh pizza, or morning bagels, both handle it without extra appliances.

Quick Preheat and Cooking

Both ovens heat up in about 60 seconds. That means you can start cooking fast without waiting on a full-size oven. This makes them perfect for quick meals or late-night snacks.

Air Frying with Less Oil

Both the SP351 and SP151 air fry with up to 75% less fat than deep frying. U.S. families often say they love getting that same crispy taste while keeping meals healthier.

Compact but Family-Friendly

Even though they’re slim, both ovens can fit a 12–13-inch pizza, six slices of toast, or several chicken breasts. They’re a good choice for couples, students, or small families who want versatility without a large oven.

Even Cooking Technology

Both models use Ninja’s air circulation system for even cooking. That helps food cook edge to edge without burnt spots or raw centers. Frozen snacks, fries, and pizza slices come out consistently crisp.

Stainless Steel Build

The SP351 and SP151 share a sleek stainless-steel finish. Reviewers say the build feels sturdy and blends in well with modern kitchens.

Energy Efficiency

Both use less energy than a full oven while still cooking quickly. Many U.S. users note this is a big plus in summer when they want to avoid heating up the whole kitchen.

Easy Cleanup

Both come with a removable crumb tray, air fry basket, and sheet pan that are dishwasher safe. Wiping down the inside is simple too, though regular cleaning helps prevent smoke from drips and grease.

Ninja SP351 vs SP151: Key Differences

Cooking Functions

The SP151 has 8 presets: Air Fry, Roast, Broil, Bake, Pizza, Toast, Bagel, and Dehydrate. The SP351 expands to 13 functions, adding Sear Crisp, Rapid Bake, Frozen Pizza, Fresh Pizza, Griddle, and Reheat. For U.S. families who like variety, the SP351 gives more options for weeknight meals or pizza nights.

Heating Technology

The SP151 uses OvenCrisp Technology, which combines infrared heat with circulating hot air. The SP351 takes it further with Dual Heat Technology—a 500°F sear plate plus cyclonic air. This gives steaks, chicken, and pizza crusts a finish that’s closer to restaurant-style results.

Smart Thermometer

The SP351 includes the Foodi Smart Thermometer, which lets you set doneness levels like rare, medium, or well done. The SP151 doesn’t include this, so you’d need a separate probe or timer if you want that precision.

Size and Cooking Space

The SP151 is slightly smaller, making it a better fit for tight kitchens. It fits a 12-inch pizza, six slices of bread, or up to four pounds of food. The SP351 has more internal height and can hold up to six chicken breasts or a two-pound roast. Families in the U.S. often find the larger space more practical.

Control Panel

The SP151 uses a simple digital display with dials. It’s easy to use but more basic. The SP351 has a touch control panel that shows both time and temperature at the same time, making it more modern and precise.

Accessories Included

Both come with a sheet pan, air fry basket, wire rack, and crumb tray. The SP351 also includes a heavy-duty non-stick SearPlate and the smart thermometer, which gives it more out-of-the-box tools.

Build and Finish

While both are stainless steel, the SP151 has a slimmer and simpler look. The SP351 feels bulkier but has premium touches that make it stand out more in a modern kitchen. Some U.S. users say the SP151 blends better into small apartments, while the SP351 looks more like a professional countertop oven.

Cleaning Experience

Both are simple to wipe down, but the SP151’s straightforward design makes cleanup faster. The SP351’s sear plate and extra accessories can take more scrubbing, especially if you cook greasy foods often.

Ninja SP351 Pros

1. 13 cooking functions, including extras like Sear Crisp and Rapid Bake.
2. Dual Heat Technology gives food a crisp, restaurant-style finish.
3. Comes with the Foodi Smart Thermometer for precise meat cooking.
4. Larger interior height fits up to six chicken breasts or a roast.
5. Premium design with added accessories like the SearPlate.

Cons

1. Bulkier design takes more counter space.
2. Extra accessories can be harder to clean after greasy meals.
3. Some U.S. users report durability issues over time.

Ninja SP151 Pros

1. Compact size makes it easier to fit in smaller kitchens.
2. 8 useful presets that cover most daily cooking needs.
3. Preheats in about 60 seconds, saving time on meals.
4. Air fries with less oil for healthier cooking.
5. Sleek stainless-steel design that blends into most kitchens.

Cons

1. Fewer functions compared to the SP351.
2. No smart thermometer included.
3. Smaller capacity may feel limiting for larger families.

User Review and Feedback

Amazon reviews and Reddit comments praise both models for heating up quickly, saving counter space, and replacing the need for a full oven. The Ninja SP351 is recommended more often because of its extra presets, Dual Heat Technology, and built-in thermometer.

Many U.S. users say these features make cooking easier and more accurate. The SP151 still has plenty of fans, especially on Reddit, where people like its smaller size, simple setup, and easier cleaning. The main complaints for both models are tough cleaning after greasy meals and questions about long-term durability.

Check the Latest price on Amazon

1. Ninja sp351 Toaster Oven Air Fryer Combo
2. Ninja sp151 Flip Toaster Oven&Air Fryer

Final Thoughts: Ninja SP151 vs SP351

I would personally choose the Ninja SP351 if you want more features and flexibility. The smart thermometer, extra functions, and Dual Heat Technology make it great for families or anyone who likes precise cooking. It feels more like a full oven replacement.

The Ninja SP151 is better if you prefer something compact, simple, and low maintenance. It covers all the basics, is easier to clean, and works well in smaller kitchens. Both ovens are reliable. The real choice comes down to whether you want simplicity or versatility.

FAQs for Ninja SP351 vs SP151

What are the main differences between the Ninja SP351 and SP151?

The Ninja SP351 is a more advanced model. It offers more functions like crushing ice and dough making. The SP151 is a simpler model, mainly focusing on blending and food processing.

Which Ninja model is better for making smoothies and frozen drinks?

Both the Ninja SP351 and SP151 can make great smoothies. However, the SP351 often has stronger ice-crushing capabilities. This makes it slightly better for very thick or frozen drinks.

Does the Ninja SP351 have more features than the SP151?

Yes, the Ninja SP351 typically includes more features. It often comes with extra accessories and specialized settings, such as dough kneading or more precise blending options, compared to the SP151.

Is the Ninja SP151 more compact or countertop-friendly than the SP351?

Generally, the Ninja SP151 tends to be more compact. Its simpler design often means it takes up less counter space. This makes it a good choice for smaller kitchens.

Which Ninja Foodi Power Mixer is a better value for the price?

The better value depends on your needs. The Ninja SP151 is usually more budget-friendly and great for basic tasks. The Ninja SP351 offers more versatility for a higher cost.

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