The Ninja CO905KS stands out for its 88 oz stainless steel jar, the largest capacity in this roundup, making it a strong choice for big-batch cooking and entertaining at a price well under $200.
Large families, batch cookers, and hosts who need maximum blending capacity with the durability of a stainless steel jar.
Skip if
Counter space is tight, since this unit weighs 12 lbs and runs 10 x 12 x 14 inches, or you prefer a clear jar to monitor blending progress.
Power 1200 W
Jar / bowl capacity 88.0 oz
Jar / bowl material Stainless Steel
Blade material Stainless Steel
Color Black
Dimensions 10 X 12 X 14 In
Priced 36% below the category median ($259.87 across 127 tracked models)
Jar / bowl capacity of 88.0 oz - larger than 95% of the 134 models we track
Weight of 12.0 lb - heavier than 74% of the 134 models we track
Pros
88 oz jar is the largest capacity in this category, ideal for big batches
Stainless steel jar and blade assembly offer durability and odor resistance
4.5 stars from 383 reviews reflects strong and consistent buyer approval
$165.95 is competitive for a full stainless steel construction blender
Cons
Opaque stainless jar means you cannot see the blend in progress
12 lbs is heavy and not easy to move around the kitchen
Controls spec is not detailed, so feature set is hard to confirm before buying
10 x 12 inch footprint requires substantial counter real estate
Our scorecard
4.4/5overall
Owner rating4.5/5
4.5 average across 383 owner ratings
Popularity2.7/5
383 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other countertop and personal blenders, immersion blenders, food processors, and masticating, centrifugal and citrus juicers we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Specifications
Power
1200 W
Jar / bowl capacity
88.0 oz
Jar / bowl material
Stainless Steel
Blade material
Stainless Steel
Color
Black
Dimensions
10 X 12 X 14 In
Weight
12.0 lb
Voltage
120 Volts
Overview
['The Ninja CO905KS is a 1200W countertop blender with an 88 oz stainless steel jar and stainless steel blade assembly. At $165.95 and 4.5 stars from 383 reviews, it offers a compelling mix of large capacity, solid construction, and a price that undercuts many competitors with smaller jars.', 'The all-stainless construction, both jar and blade, sets this apart from similarly priced blenders that use plastic jars. Stainless steel holds up better to hot liquids, is less likely to absorb odors, and is generally more durable over years of use. The tradeoff is that you cannot see inside the jar while blending, which some cooks find inconvenient.', 'At 12 lbs and 10 x 12 x 14 inches, this is a substantial machine. Controls are not detailed in the spec listing, but the 4.5-star review average across a meaningful buyer pool suggests the control scheme works well in practice. Buyers who make soup or smoothies in large batches will appreciate not having to run two or three cycles to fill enough servings.']
Performance notes
The 1200W motor on a standard 120V circuit is capable for the jar size. An 88 oz jar running at 1200W will handle soups, smoothies, frozen drinks, and sauces in large quantities. Both the jar and blade are stainless steel, which tolerates hot-liquid blending better than plastic alternatives. The unit weighs 12 lbs, so it is best treated as a stay-on-counter appliance rather than something you pull out and put away frequently.
What buyers say
383 reviews at 4.5 stars is a well-developed and clearly positive consensus. At that sample size and average, the rating is unlikely to shift significantly with more reviews. Buyers appear to be satisfied with both capacity and durability, which aligns with what the specs suggest.
The stainless steel jar is better suited for hot liquids than polycarbonate or standard plastic jars, which can warp or hold onto food smells after repeated hot-liquid blending. Stainless steel does not transmit heat to the exterior as fast as glass, so caution is still advised when blending very hot soups. Always leave a vent for steam.
Is 88 oz more than most households need?
For one or two people making daily smoothies, 88 oz is more than necessary, and a smaller blender would be easier to handle and clean. For a household of four or more, or anyone doing batch cooking, soups, or making drinks for guests, 88 oz means fewer separate blending runs and less cleanup per batch.
How does this compare to similar Ninja blenders?
The main differentiator for the CO905KS is the stainless steel jar, which most Ninja models do not offer. If you want the Ninja build quality and brand reliability with a more durable jar material, this model addresses that specifically. Buyers who prefer a clear jar for monitoring blending progress should look at Ninja models with plastic or glass jars.
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