Ninja Foodi OP350UK vs OP450UK
A battle between the Ninja Multicookers. The OP350UK offers more functions but the OP450UK has more space. Which one should you buy?
Air fryers go way beyond just cooking chips in a basket, and these two Ninjas exemplify this. The Ninja OP350UK and Ninja OP450UK are both versatile multicookers for meals for the whole family. There are some major differences between the two, however. We’ve pitted them against each other so you can decide which one’s for you.
Ninja Foodi 9-in-1 Multi-Cooker 6L OP350UK vs Ninja Foodi 7-in-1 Multi-Cooker 7.5l OP450UK: Vital statistics

Product Name | Ninja Foodi 9-in-1 Multi-Cooker 6L OP350UK |
---|---|
Finder score | ★★★★★ |
Price | £172.11 |
Link | Buy at Amazon |

Product Name | Ninja Foodi 7-in-1 Multi-Cooker 7.5l OP450UK |
---|---|
Finder score | ★★★★★ |
Price | N/A |
Round 1: Stated functions
Functions | 9 | 7 |
---|---|---|
Functions include | Air fry, Grill, Roast, Bake, Steam, Sear/Saute, Pressure cook, Slow cook, Dehydrate, Reheat, Keep warm, Max crisp | Air fry, Grill, Roast, Bake, Steam, Sear/Saute, Pressure cook, Slow cook, Keep warm, Max crisp |
Timer | Digital | Digital |
Stated functions | ★★★★★ | ★★★★★ |
As multicookers, both can cook loads of foods in different ways. They’ll both come with crisping lids and pressure cooking lids. They’ll both need some time getting used to the functions for cooking complete meals.
The OP350UK boasts more functions than the OP450UK. It can dehydrate, yoghurt and Max Crisp (a Ninja specific function to cook frozen food super fast). Both heat up rapidly.
Round 2: Capacity and size
Capacity | 6l | 7.5l |
---|---|---|
Cooking zones | 1 | 1 |
Cooking tiers | 3 | |
Dimensions (HxWxD) | 32cm x 43cm x 36cm | 35cm x 39cm x 33cm |
Weight | 11kg | 11.3kg |
Wattage | 1,460W | 1,760W |
Capacity and size | ★★★★★ | ★★★★★ |
The OP450UK comes out on top, with 1.5 litres more than the OP350UK. It can cook full meals in its pot, with pulses at the bottom, veg in the lower rack and meat or other protein at the top. It’ll also cook a bigger chicken than the OP350UK. Both should feed a family of 4 to 6. They’re both very heavy and bulky machines, although the OP350UK is wider – things to bear in mind if you have a small kitchen.
Round 3: Convenience
Dishwasher-safe parts | ||
---|---|---|
Transparency | ||
Rotating basket | ||
Convenience | ★★★★★ | ★★★★★ |
Both Ninjas are extremely convenient at cooking food quickly, and while shaking is recommended, their large basket capacities sometimes means you won’t need to tend to your food. The functions aren’t complicated and both machines are simple to start up. Ninjas don’t come with presets, nor a viewing window unfortunately. They are both easy to clean up.
Overall winner: Ninja Foodi 7-in-1 Multi-Cooker 7.5l OP450UK
If you’re a bit of an experimental foodie, the Ninja OP350UK will spice up your cooking regime and is an excellent machine. But if you’re looking for complete meals, the better overall multicooker is the OP450UK. It offers more space and is extremely easy to use.

Product Name | Ninja Foodi 9-in-1 Multi-Cooker 6L OP350UK |
---|---|
Finder score | ★★★★★ |
Price | £172.11 |
Link | Buy at Amazon |

Product Name | Ninja Foodi 7-in-1 Multi-Cooker 7.5l OP450UK |
---|---|
Finder score | ★★★★★ |
Price | N/A |
More guides on Finder
-
Philips Viva Collection XXL HD9650/99 review 2022
We reviewed the Philips Viva Collection XXL HD9650/99 to see if it’s worth the money.
-
Philips Essential Airfryer HD9200/91 review 2022
We reviewed the Philips Essential Airfryer HD9200/91 to see if it’s worth the money.
-
Tefal Easy Fry Compact EY101827 review 2022
We reviewed the Tefal Easy Fry Compact EY101827 to see if it’s worth your money.
-
Innoteck Kitchen Pro DS-5895 16L review 2022
We reviewed the Innoteck Kitchen Pro DS-5895 to see if it’s worth the money.
-
Ninja Foodi OP450UK vs Ninja AG301UK Health Grill
The Ninja OP450UK is more expensive than the AG301UK. They both have different functions, but which one is worth your money?
-
Ninja Foodi AF300UK vs Tefal ActiFry Genius XL
Both the Ninja AF300UK and Tefal Actifry Genius XL are dual compartment air fryers. Which one is worth buying though?
-
Ninja Max AF160UK review 2022
We reviewed the Ninja Max AF160UK to see if it’s worth the money.
-
Ninja Air Fryer AF100UK vs AF160UK Max
The Ninja AF160UK is a higher-spec air fryer than the AF100UK, but that’s reflected in the price tag. Do its features and spec justify the cost?
-
Tower Xpress Pro Combo 10 in 1 Air Fryer T17076 review 2022
We reviewed the Ninja Foodi Dual Zone AF300UK to see if it’s worth the money.
Ask an Expert