KOIOS 850W Bullet vs NutriBullet 900-Watt Pro Side-by-Side Comparison

Tina Pham
Tina Pham
Reviewer
Nguyen Ntk
Nguyen Ntk
Visual Specialist
Reviewed
Our recommendations are made independently through research and testing following our review procedure. We may receive commissions from purchases made via our links at no additional costs to you.
Tested Using Methodology v1.0
Updated Dec 1, 2022
Tested Using Methodology v1.0
Updated Nov 28, 2022
Koios Pro Bullet Personal Blender Review
NutriBullet Pro 900W Personal Blender Review
Blender type
personal
personal
Power
850W
900W

Our Verdict

7.4
Overall Score
  • Performance (60%)
    7.1/10
  • Design (25%)
    8.3/10
  • Usability (15%)
    7.3/10
9.8
Overall Score
  • Performance (60%)
    9.8/10
  • Design (25%)
    9.7/10
  • Usability (15%)
    9.7/10

If you’re after an all-around blender that can cater to most of your daily needs, from crushing ice cubes into snow to making silky frozen fruit smoothies, the NutriBullet 900-watt Pro is definitely a better choice.

Efficient in its simplicity, your NutriBullet will capture the value and versatility of a standard, full-sized blender—but in a more compact footprint and —pretty well. In our testing, it repeatedly occupied the top spots in every performance in both blending time and blended results. At the time of writing, it is our best-to-buy personal blender and you may hardly find anything better than it, indeed. 

The KOIOS Bullet, in comparison, is not as powerful so it is only good for light-duty blending tasks, and you’ll need to cut food into smaller chunks to ensure a thorough blending process. Nonetheless, this blender is quite the apex of the segment with standard features and stable performance.

Performance

7.1
Performance Scores
  • Protein Shake (40%)
    9.2/10
  • Frozen Fruit Smoothie (30%)
    8.0/10
  • Fibrous Greens (20%)
    5.0/10
  • Crushed Ice Cubes (10%)
    0/10
9.8
Performance Scores
  • Protein Shake (40%)
    10/10
  • Frozen Fruit Smoothie (30%)
    10/10
  • Fibrous Greens (20%)
    9.0/10
  • Crushed Ice Cubes (10%)
    10/10
9.2

Protein Shake

10
KOIOS 850W Bullet Protein Shake
KOIOS 850W Bullet Protein Shake 1
  • Blending Time: 56 seconds
  • Result: Smooth

The KOIOS can make a good breakfast or post-workout milkshake in a matter of seconds. In this test, it took less than 1 minute to break down and combine all the ingredients, which was faster than most. The powerful motor couldn’t quite remove all lumps from the protein shake, but only a few chunks remained unblended, so our drink was still pleasant to drink. Moreover, the residual solids didn’t affect the tasting experience much — they were so tiny that they didn’t bother us at all.

NutriBullet 900-Watt Pro Protein Shake
  • Blending Time: 40 seconds
  • Result: Silky Smooth

The NutriBullet Pro is amazingly capable when it comes to preparing protein shakes. In this test, it was the fastest contender, mixing a silky-smooth workout drink in only 40 seconds. It blended well enough that we didn't need to shake the cup to promote contact between the food and blades. The blender itself drew everything toward its blades very efficiently. There even wasn’t anything clinging to the sides of the cup.

8.0

Frozen Fruit Smoothie

10
KOIOS 850W Frozen Fruit Smoothie
KOIOS 850W Frozen Fruit Smoothie 1
  • Blending Time: 1 min 20 seconds
  • Result: Silky Smooth
  • Suction:

The KOIOS Bullet brought all the ingredients together for a great-tasting smoothie in one minute and twenty seconds. Of all the similarly-priced blenders we tested, it was the only one that could liquify frozen ingredients that quickly. Most were 20-40 seconds slower, but that can make a difference; frozen foods thaw quickly at room temperature, so the longer you blend, the more your smoothie will be diluted.

Simply put, the quicker performance of the KOIOS made for a thicker and more ice-cream-like smoothie. Chilly and fresh enough to quench our thirst, it also retained the texture that people look for in frozen fruit smoothies.

NutriBullet 900-Watt Pro Frozen Fruits Smoothie 1
NutriBullet 900-Watt Pro Frozen Fruits Smoothie
  • Blending Time: 50 seconds
  • Result: Silky Smooth

The NutriBullet completed our smoothie in less than a minute, and its results were unparalleled. Our smoothie came out exceptionally velvety. Although there were still tiny flecks of raspberry skin and strawberry seeds, this is a common occurrence when it comes to processing such ingredients. 

It’s worth noting here that no other personal blender we tested could produce such an ideal texture in the same time frame; some couldn’t even break down strawberries after a full minute. Again, this blender never demanded that we shake the cup or stir the contents, and we really couldn't be happier.

5.0

Fibrous Greens

9.0
KOIOS 850W Fibrous Greens
KOIOS 850W Fibrous Greens 1
  • Blending Time: 20 seconds
  • Result: Very Coarse

We evaluated how well this blender handled fiber by blending kale, celery, spinach, and water for 20 seconds. The mixture came out grainy with a substantial amount of partially blended particles. Then, we drained it through a mesh strainer and examined the pulp. It looked like green sand with a moderately coarse consistency. We didn't taste the mixture prior to draining, but this coarseness, together with the volume of pulp, meant this blender failed to extract most of the flavor from the greens.

We can’t say for sure if more blending time would improve the final result, but can conclusively say that 20 seconds worth of blending is not enough. By comparison, the Ninja Fit did the same job much better, leaving behind a significantly smaller amount of visible flakes. 

Our conclusion is that the KOIOS is just mediocre for blending leafy veggies. If you want to avoid leafy chunks in a quick high-fiber beverage, this is not the blender for you.

NutriBullet 900-Watt Pro Fibrous Greens
NutriBullet 900-Watt Pro Fibrous Greens 1
  • Blending Time: 20 seconds
  • Result: Fine

Liquifying high-fiber whole food like leafy veggies is always a challenging task for personal blenders, but the NutriBullet’s performance really made it stand out from the rest. 

It could break all the ingredients down into their finest state in only 20 seconds. We drained the completed drink through a mesh strainer and noticed it left behind very few leafy chunks. It could produce an even better result if we blended longer. 

Actually, we didn’t expect such good results so quickly. Most of the machines we tested turned out very coarse blends on this test.

0.0

Crushed Ice Cubes

10
KOIOS 850W Crushed Ice 1
KOIOS 850W Crushed Ice
  • Ice Fineness: Coarse
  • Unblended Ice: 77% of 6 oz

In this test, its performance was lackluster. The machine itself is incapable of crushing ice cubes. In fact, attempting to do so is not a good idea; the heavy-duty task can take a toll on your device and impair its performance in more ordinary blends.

NutriBullet 900-Watt Pro Crushed Ice Cubes
NutriBullet 900-Watt Pro Crushed Ice Cubes 1
  • Ice Fineness: Very Fine
  • Unblended Ice: 3% of 6 oz

The NutriBullet Pro is not only capable of crushing ice cubes, it excels at it! We tested a myriad of personal blenders, and so far haven't found a single machine that can crush ice as fluffy as this one. 

It finished the test in about 40 seconds. A couple of ice chunks still remained solid, but it didn’t look like the blades would be able to grab them. Nevertheless, this NutriBullet performed wonderfully and is very deserving of the top score.

Design

8.3
design Scores
  • Blades (20%)
    7.5/10
  • Build Quality (60%)
    8.0/10
  • Blending Cup (20%)
    10/10
9.7
design Scores
  • Blades (20%)
    10/10
  • Build Quality (60%)
    9.5/10
  • Blending Cup (20%)
    10/10

In the Box

KOIOS 850W Bullet In the Box
  • Motor Base 
  • Two Blade Assemblies 
  • Four Lids 
  • Cleaning Brush 
  • Three Blending Cups
  • Recipe book & user guide
NutriBullet 900-Watt Pro In the Box
  • Motor base 
  • Extractor blade
  • Two blending cups 
  • Two to-go lids
  • Two cup rings 
  • Two handled cup rings 
  • Recipe book & user guide

Dimensions

KOIOS 850W Bullet Dimension
  • Height:
    12.2" (31.0 cm)
  • Width:
    5.5" (14.0 cm)
  • Weight:
    2.9 oz (82 g)
  • Shaft Length:

The KOIOS Bullet’s dimensions are about as standard as they come. At 12 inches tall by 5.5 inches wide, it is a typical size for a personal blender and can easily tuck away in your cabinet. Mobility is also very practical thanks to its compact form.

NutriBullet 900-Watt Pro Dimension
  • Height:
    14.7" (37.3 cm)
  • Width:
    5.4" (13.7 cm)
  • Weight:
    4.6 oz (130 g)
  • Shaft Length:

This blender comes at an ideal size — small, portable, and easily storable. Although it’s bigger than some single-serving blenders such as the Ninja Fit, it won’t take up too much space on your counter or in your cabinet.

8.0

Build Quality

9.5
KOIOS 850W Bullet Build Quality

Build quality is moderate, with a body mostly made of plastic. The stainless steel blades look promising in terms of durability and capability while the motor base is rather flimsy. However, despite that, this blender stands very firmly during operation. It doesn’t jump around while handling solid foods like most mid-range counterparts such as the Magic Bullet. 

We like the metal surface on the front of the motor base. It gives our blender a more attractive appearance and better quality feel. After a couple of months in the lab, this surface still retains its original shine — even after the occasional cleaning with a metal scouring pad.

NutriBullet 900-Watt Pro Build Quality

This blender has a flawless finish. Its build quality is better than most rivals. It is also more pleasing to the eye and neither the motor base nor the blending cups scratch easily. For the most part, after a careful inspection, we all agreed the NutriBullet Pro was a better product than it looked at first glance.

7.5

Blades

10
KOIOS 850W Bullet Blade
KOIOS 850W Bullet Blade 1
  • Material:
    Stainless Steel
  • Type:
    Sharp Blade
  • Guard Material:
  • Blade Count:
    6
  • Removable:
    Yes
  • Dishwasher Safe:
    No

The KOIOS Bullet comes with two extractor blades: one is flat and the other shaped like a cross. 

The flat blade has two dull prongs tilted slightly upwards and is only compatible with the short blending cup. We haven’t performed any tests on it, but believe this add-on will be handy for grinding hard ingredients like coffee beans, raw nuts, and whole grains. The blender’s mighty motor and consistent performance suggest it should be able to handle such ingredients.

Most of your blended treats will be best served by the cross blade. With six sharp prongs, it contacts more food at any given moment, resulting in finer outcomes and faster blending times. That being said, it looks less sturdy than some models (particularly the Ninja Fit). More prongs also means you’ll have more nooks and crannies to weave in and out of when it comes to cleaning.

NutriBullet 900-Watt Pro Extractor Blade
NutriBullet 900-Watt Pro Extractor Blade 1
  • Material:
    Stainless Steel
  • Type:
    Sharp Blade
  • Guard Material:
  • Blade Count:
    6
  • Removable:
    No
  • Dishwasher Safe:
    No

The blade is made of high-quality stainless steel and has 6 prongs. Solidly built, it is even more heavy-duty than it seems on paper. Still, the manufacturer recommends that it not be used for dry grinding or as a regular ice crusher since this may impair its efficiency and limit its lifespan.

Motor Base

KOIOS 850W Bullet Motor Base
KOIOS 850W Bullet Motor Base 1
  • Rated Voltage:
    120 V
  • Rated Power:
    850 Watt
  • Working Time:
    ≤ 1 minute
  • Protection:
    No
  • Weight:
    2.4 lbs (1.1 kg)
  • Cord Length:
    4.1 ft
  • Extra Feature:
    suction feet, ventilation holes

The main housing of the KOIOS Bullet is made from medium-grade plastic, except for the front surface. It is a little smaller than other personal blenders, but could surprisingly tackle our tests without slipping or rocking around on the counter thanks to the four rubber feet at the bottom. 

Most models around this price cannot run continuously for more than one minute because the motor can overheat. The KOIOS Bullet is not an exception despite the fact that it’s equipped with many ventilation holes for better heat dissipation. If your drinks demand a longer blending time, make sure you let your machine cool down for 20-30 seconds after each 1-minute interval.

  • Rated Voltage:
    110 - 120 V
  • Rated Power:
    900 Watt
  • Working Time:
    ≤ 1 minute
  • Protection:
    No
  • Weight:
    3.7 lbs (1.7 kg)
  • Cord Length:
    2.5 ft
  • Extra Feature:
    Silicon feet

Peaking around 900 watts, the motor is powerful enough to handle just about any blending project. However, be aware that it cannot run longer than 1 minute at a stretch. If more time is needed, you should allow the motor to cool down for 20-30 seconds before continuing with the next 1-minute interval. This will help protect your machine from being permanently damaged. 

There are four silicone feet on the bottom of the base to keep it steady during operation. So far, ours hasn’t tried to bounce around on the counter even while tackling intensive tasks like crushing ice cubes. 

The rubber gasket built around the top is also very helpful. It’s meant to hold the cup tightly to the base, reducing the risk of leakage. On the other hand, we’re quite disappointed about the power cord. It is so short that it often got pulled from the outlet while we were using it.

10

Blending Cup

10
KOIOS Bullet Blending Cup
KOIOS Bullet Blending Cup 1
KOIOS Bullet Blending Cup 2
  • Material:
    Plastic
  • Capacity:
    10 oz, 17 oz, and 17 oz
  • Weight:
    0.2 lb, 0.23 lb, and 0.34 lb
  • Dishwasher Safe:
    Yes
  • Measurement:
    No
  • Suitable For:
    Small batches
  • Accessories:
    two spout lids, one flat-top lid, one sieve lid

In this set, there are two tall cups (17 oz) for blending watery mixtures and a short cup (10 oz) for grinding solid ingredients. The tall cups can be sealed tightly by either a flat-top lid or spout lid if you want to enjoy your drink on the go. And the short cup’s distinctive design looks lovely. It features a flat foot for increased stability and is particularly compatible with the sieve lid so you can use it as a shaker for ground spices like nutmeg, cinnamon, cocoa flour, ground coffee beans, or whatever seasonings you need.

NutriBullet Pro 900W Blending Cup
  • Material:
    Plastic
  • Capacity:
    32 oz
  • Weight:
    0.8 lb
  • Dishwasher Safe:
    Yes
  • Measurement:
    No
  • Suitable For:
    Small and medium batches
  • Accessories:
    2 to-go lids, 2 cup rings, 2 handled rings

There are two identical blending cups with lids included. They both have a capacity of 32 oz and can be used interchangeably with the extractor blade. The to-go lids feature flip-top spouts and screw on tightly to seal well; we got no leakage even when we turned the cups upside-down. As a nice bonus, this blender also comes with removable lip rings, which make the cups easier to sip from directly.

Speed and Controls

  • Control Type:
    Push
  • Min Speed:
    N/A
  • Max Speed:
    N/A
  • Presets:
    No
  • Noise Level:
  • Digital Display:
    No
  • Pulse Mode:
    No

Like many personal blenders, the KOIOS offers only one speed option but doesn’t have buttons or any sort of controls. To blend, you simply press the cup down into the base, then hold it continuously until your smoothie is ready. The operating method is so simple that you may not need any practice. It’s easy to get comfortable with this blender.

  • Control Type:
    Twist and Push
  • Min Speed:
    RPM
  • Max Speed:
    RPM
  • Presets:
    No
  • Noise Level:
  • Digital Display:
    No
  • Pulse Mode:
    No

This blender has one speed and doesn’t need a control panel. Just attach the blending cup to the blade, place it onto the motor base, push it down to start the motor, and twist it to lock it in place. This makes this NutriBullet  a great choice for people who like simplicity and don’t care about advanced settings. You can also simulate pulse mode by pressing and releasing the cup in short intervals.

Usability

7.3
usability Scores
  • Hands-Free Operation (60%)
    5.7/10
  • Assembly (20%)
    10/10
  • Cleanability (20%)
    9.5/10
9.7
usability Scores
  • Hands-Free Operation (60%)
    10/10
  • Assembly (20%)
    9.5/10
  • Cleanability (20%)
    9.0/10
5.7

Hands-Free Operation

10

You can’t walk away while the KOIOS Bullet does its job the way you might with a full-sized blender. It requires you to keep a hand on it the whole time. Plus, you may occasionally need to pause to remove the cup and give it a thorough shake. 

Particularly in the smoothie test, frozen fruits got stuck under the blade and jammed it up. To even out the blend, we had to shake the cup after every 20 blending seconds. It gave us a good smoothie in 1 minute 20 seconds worth of runtime, so the process demanded four intervals total. Reviewers make a fuss about the repeated delays, but they’re a common occurrence among personal-size blenders. As long as you’re willing to spend an extra minute or two in the kitchen, it shouldn’t be a big deal.

We awarded this blender maximum points for this category. It takes little effort on your part to get the job done. 

While several personal blenders demand that we hold the cup in place  throughout the operation in order to engage the motor, the NutriBullet Pro is more fun to use since you can take your hands off it once the cup is locked in place. 

And as mentioned earlier, it never needed extra shaking or stirring to dislodge chunks trapped under the blades; it created an even blend entirely on its own.

10

Assembly

9.5

Setting up this blender is a breeze. After twisting the blade assembly onto the cup, you’ll need to flip the cup over and place it securely onto the motor base, aligning the cup’s protrusions with the grooves inside the motor base. To start blending, gently push the cup down as long as you desire. Once finished, release the cup from the motor base and unscrew the blade assembly.

Assembly is the easiest part of using the NutriBullet Pro. Just screw the blade section onto your blending cup, turn it upside-down, and push it down onto the motor base to start blending. Twist clockwise to lock it in if you wish. To remove it, just twist counterclockwise and lift.

9.5

Cleanability

9.0

Of all the blenders we tested, the KOIOS is the only one with a blade that can be separated from its plastic base. It goes without saying, this can be a life-saver, especially since the blade assembly is not dishwasher safe. 

To remove the blade attachment from the base, push the blade gear forward until it falls out. Note that these two pieces screw very tightly together through a white gasket ring so you'll have to apply a significant force, which can be a challenge if your hands are weak or in pain. 

Once you’ve separated the blade attachment, plastic base, and gasket ring, they can be washed off easily with soapy water. The only parts that are tricky to clean are the blade’s undersides, but the included small brush will make life easier on you. 

The other pieces, including the lids and blending cups, can be put in the dishwasher.  For manual cleaning, just rinse them with soapy water.

Cleaning this blender is easy. Simply place the pieces (except for the motor base and extractor blade) on the top rack of the dishwasher or hand wash with soapy water and rinse well. 

Regarding the motor base, you can use a non-abrasive sponge or dish cloth dampened with soapy water. Wipe down exposed surfaces until clean. You may occasionally need a small brush to remove sticky debris from the white actuator tabs.    

The extractor blade, on the other hand, is a little tricker to clean. We found it’s almost impossible to reach the blade’s underside unless you use a straw-cleaning brush.