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Ninja BL660 Professional Compact Smoothie & Food vs Oster® Classic Series 8-Speed Blender with 6-Cup

Updated August 2026 — Ninja BL660 Professional Compact Smoothie & Food wins on versatility and capacity, Oster® Classic Series 8-Speed Blender with 6-Cup wins on price.

The Ninja BL660 offers superior power and versatility compared to the budget-friendly Oster Classic Series, making it the better choice for serious blending tasks.

Why Ninja BL660 Professional Compact Smoothie & Food is better

Power

Ninja has a 1100-watt motor vs Oster's 700-watt.

Capacity

Ninja's 72 oz. pitcher vs Oster's 6-cup jar.

Versatility

Ninja offers specialized functions for various tasks.

Why Oster® Classic Series 8-Speed Blender with 6-Cup is better

Price

Oster is significantly cheaper at $48.85.

Simplicity

Oster is easier for basic blending tasks.

Weight

Oster's glass jar is heavier but durable.

Overall score

Ninja BL660 Professional Compact Smoothie & Food
85
Oster® Classic Series 8-Speed Blender with 6-Cup
65

Specifications

SpecNinja BL660 Professional Compact Smoothie & FoodOster® Classic Series 8-Speed Blender with 6-Cup
Motor Power1100 watts700 watts
Pitcher Size72 oz.6 cups
Speed Settings3 manual8 speeds
MaterialBPA-free plasticGlass jar
Dishwasher SafeYesNo

Dimension comparison

Ninja BL660 Professional Compact Smoothie & FoodOster® Classic Series 8-Speed Blender with 6-Cup

Overview of the Ninja BL660 and Oster Classic Series

The Ninja BL660 is a powerful 1100-watt blender, while the Oster Classic Series operates on a 700-watt motor. The Ninja's higher wattage allows for faster and more efficient blending, especially for tougher ingredients. In contrast, the Oster serves as a versatile option for those looking for a more budget-friendly blender. At $139.99, the Ninja is about 186% more expensive than Oster’s price of $48.85, making it essential to consider what features justify the price difference.

Power and Performance

The Ninja BL660 boasts an impressive 1100-watt motor that excels at ice crushing and blending tough ingredients, making it perfect for smoothies and frozen drinks. This power translates to quicker blending times and smoother textures. In contrast, the Oster Classic Series features a 700-watt motor, which, while adequate for everyday blending tasks, may struggle with more demanding ingredients like frozen fruits or hard vegetables. The Ninja offers superior performance, especially for users who prioritize efficiency and speed in their blending tasks.

Design and Build Quality

The Ninja BL660 comes with a 72 oz.* pitcher and includes two 16 oz. to-go cups, making it suitable for larger batches and on-the-go convenience. Its BPA-free construction ensures safety, and the parts are dishwasher safe for easy cleanup. On the other hand, the Oster Classic Series features a 6-cup glass jar, which is durable but may be heavier and less portable than the Ninja’s plastic components. The glass jar is also more prone to breakage if dropped. Overall, the Ninja offers a more versatile design with its larger capacity and portability.

Functions and Versatility

When it comes to functions, the Ninja BL660 shines with its three manual speeds, pulse control, and dedicated single-serve function, allowing for a tailored blending experience. It is designed to handle a variety of tasks, from smoothies to sauces, with ease. The Oster Classic Series, with its 8-speed settings, provides a range of options but lacks the specialized functions that enhance the user experience. While both blenders can handle basic tasks, the Ninja’s versatility makes it a better choice for those who want to explore different recipes and blending techniques.

Cleaning and Maintenance

Both blenders offer easy cleaning options, but the Ninja BL660 takes the lead with all removable components being dishwasher safe. This feature is particularly beneficial for busy individuals who prefer quick cleanup after blending. The Oster Classic Series, while also straightforward to clean, uses a glass jar that requires more careful handling. Users may find that the ease of maintenance is a significant factor, especially after frequent use, making the Ninja a more appealing option in this category.

Price Comparison

Price is a crucial consideration when choosing between these two blenders. The Ninja BL660 is priced at $139.99, which might deter budget-conscious buyers. In contrast, the Oster Classic Series is significantly more affordable at $48.85, making it an attractive option for those on a budget or seeking a basic blender. The price difference of about $91.14 means that potential buyers should weigh their need for advanced features against their budget constraints carefully.

Customer Feedback and Popularity

In terms of popularity, the Ninja BL660 holds a sales rank of 356, indicating it is well-regarded among consumers, especially in its category. The Oster Classic Series, with a sales rank of 2803, is a solid performer but doesn't quite match the Ninja in terms of market presence. This disparity in ranks may suggest that the Ninja is more favored by those looking for high-performance blending, while the Oster appeals more to casual users.

Which should you buy?

Choosing between the Ninja BL660 and the Oster Classic Series ultimately hinges on your blending needs and budget. The Ninja BL660 is ideal for those seeking power, versatility, and advanced features, making it suitable for serious cooks and smoothie enthusiasts. However, if you're looking for a no-frills, budget-friendly option for basic tasks, the Oster Classic Series is a commendable choice. Weigh the importance of performance against price to determine which blender best fits your lifestyle.