The BN400 and BN401 models feature a 1000‑1100‑watt peak motor, while the BN301 uses a slightly lower 900‑peak‑watt motor, which can affect how quickly ice and frozen fruit are pulverized. Cup sizes also vary: the BN400 offers both 18‑oz and 24‑oz to‑go cups, the BN401 includes 18‑oz and 24‑oz cups as well, and the BN301 comes with three 20‑oz cups. Higher wattage and larger cup options generally provide faster blending and more flexibility for batch sizes.

Auto‑iQ uses pre‑programmed timing sequences that automatically pulse, blend, and pause to achieve optimal texture without guesswork, whereas manual pulse requires you to judge blending time yourself. This technology is especially helpful for beginners who want consistent results, while experienced users may still prefer the tactile control of a pulse button for custom textures. Both methods work with the same powerful motors, so the choice is mainly about convenience versus hands‑on control.

The Fit model’s 700‑watt motor is sufficient for basic smoothies, shakes, and soft fruit blends, but it may struggle with large ice cubes or frozen fruit compared to the 1000‑watt Nutri Pro units. It excels in compactness and price, making it ideal for dorm rooms or small kitchens where space and cost are priorities. If you regularly blend frozen drinks or need faster performance, stepping up to a 1000‑watt model provides noticeable speed and smoother results.

The BN400 and BN401 both include two to‑go cups (18‑oz and 24‑oz) with spill‑proof spout lids, allowing you to blend directly into a travel cup and take it with you. The BN401 adds a slightly higher 1100‑watt motor, giving a bit more power for tougher ingredients while still maintaining a compact footprint. For most users, the BN400 strikes a balance of price, power, and convenience, making it the most value‑driven on‑the‑go option.

The BN301 includes a recipe inspiration guide with 20 suggested smoothies and shakes, plus three 20‑oz to‑go cups. The BN400 and BN401 focus on the two to‑go cups but do not ship with a dedicated recipe booklet, though Ninja’s website offers free digital recipes. If having printed recipes is important to you, the BN301 provides the most supplemental content.

All models feature dishwasher‑safe cups, lids, and blade assemblies, which makes cleanup straightforward. The Fit’s single 16‑oz cup is the smallest and quickest to rinse, while the BN301’s three 20‑oz cups may require a bit more space in the dishwasher. Regardless of size, the detachable base and BPA‑free components across the line are designed for hassle‑free maintenance.

Yes, every model listed includes Ninja’s extractor blade assembly that breaks down skins, seeds, and pulp to release vitamins and minerals, a feature marketed as nutrient extraction. The higher‑watt models (BN400, BN401, and the 1000‑watt Nutri‑Blender Pro) tend to produce smoother extractions faster, especially with fibrous produce. Even the 700‑watt Fit can perform nutrient extraction, though it may require longer blending times for tougher greens.

All the compact models are designed to sit on a small countertop, but their base dimensions differ slightly; the BN401’s 1100‑watt motor base is marginally larger than the Fit’s 700‑watt unit. If you have a very tight kitchen, the Fit or BN301, with their slimmer profiles, will occupy less space. For most kitchens, any of the Nutri Pro models will fit comfortably, especially since they can be stored upright to save room.