A practical comparison
KitchenAid K150 KSB1332 or KSB1325?
The KitchenAid K150 name covers at least two useful package choices in the current US family listing. KSB1325 is the standard 48-ounce jar-and-lid setup. KSB1332 adds two 16-ounce personal jars, their lids and a blade assembly. Both are built around three manual speed settings and a held Pulse/Ice Crush control, but the included-vessel count changes what each package is for. Compare exact model codes before shopping: the matte-gray and black finishes do not by themselves identify whether the two small jars are included.
Choose by the vessel you actually use
Pick KSB1325 if the 48-ounce main jar is the only included vessel you need. Its product page also lists 6-ounce small-batch and 16-ounce personal-jar expansion packs separately; those are not standard-box contents. Pick KSB1332 when two cold, portable personal servings make sense alongside the full-size jar. The extra cups are used one at a time on the same base, not as a second motor or a simultaneous two-person blending system.
Both packages are still nominally 48-ounce main-jar configurations. A personal cup does not add 16 ounces to the large jar or make the system a larger-batch blender. Conversely, if your usual recipe is a single cold serving, the paired cups in KSB1332 may be more accessory storage and washing than you want. Ask whether you will use the extra jars every week rather than treating a higher accessory count as automatically better.
Understand the control difference from a K400
The K150 family is straightforward: three speed positions and a hold-to-run combined Pulse/Ice Crush control. KitchenAid describes Soft Start and Intelli-Speed motor features, but its documents do not list recipe-category programs or an automatic Clean cycle for these K150 packages. The manual's Ice Crush guidance is practical—about half a standard tray or 7–8 cubes at a time—but the advertised less-than-10-second result is the manufacturer's claim for half a tray, not a test result from this guide.
The KitchenAid K400 KSB4026 is a meaningful third comparison. Its exact Color of the Year package also lists a 48-ounce jar, while the K400 product guide specifies five speeds, Pulse, Ice Crush, Icy Drink and Smoothie cycles plus a separate Clean cycle. Choose K400 if those controls are essential; do not expect them simply because another KitchenAid blender also names ice crushing. The K400 product pages do not establish that its jar is interchangeable with the K150's.
Respect the manual's jar and temperature boundaries
The K150 manual says hot ingredients belong only in the full-size jar, with the lid center cap locked, starting at speed 1. It prohibits hot ingredients in the personal or small-batch jars. The manual also instructs users not to pass the topmost main-jar measurement mark. It does not provide an independent finished-liquid limit in ounces, so do not assume the nominal capacity can be filled to its rim for every hot, foamy or expanding recipe.
For an everyday small cold drink, KSB1332 offers its personal-cup path. For hot soup or a larger blended batch, the included main-jar path is the relevant plan. That separation is why a good comparison keeps personal-jar count, main capacity and hot-use limits as distinct questions. If you need more than a 48-ounce main vessel, compare a different model and make sure its exact supplied jar, not a separate accessory or neighboring package, meets your requirement.
What changes in the matcher?
A request for at least 48 ounces can fit the K150 main-jar plan; a 64-ounce minimum cannot. Asking for two included personal jars can select KSB1332 and reject KSB1325, while choosing the standard package leaves that requirement unmet. If you require hold-to-run Pulse/Ice Crush rather than automatic programs, select that exact control path; if you require a Clean cycle or the K400 recipe menu, K150 is excluded. A strict preference for a jar material, footprint, wattage or longer warranty will not be answered by guesswork where the exact K150 listing and manual leave it unreported.
Related model assessments
Read the KSB1325 standard-package review and KSB1332 two-personal-jar review for exact box contents, operating details and care notes. For the K400 option, see the KSB4026 Color of the Year review. The point of these comparisons is fit, not a ranking: the right K150 depends on whether your everyday task calls for one full-size jar, two cold serving cups or a different documented control menu.