THE PICKS HIVE COMPARISON · KITCHEN PREP
Ninja Prepi PN301 vs PN351: Which Version to Buy
By PicksHive · Updated October 22, 2026 · Research-based buying advice, not a hands-on test
QUICK ANSWER
Buy the PN351 if you dice potatoes, onions or peppers weekly. Buy the PN301 if you mostly chop, slice and shred; compare today’s prices before paying for the extra kit.
Both have 5-cup and 7-cup bowls with storage lids. The standard PN301 is 5-in-1; PN351 adds the dicing kit. Check the exact bundle contents.
In Stock · (as of Nov 3, 7:45 PM EST – Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.Amazon returned no exact PN351 listing at our latest check. Its button opens an Amazon search for PN351; no substitute model or price is shown.
As an Amazon Associate, PicksHive earns from qualifying purchases.
Ninja PREPi PN301
Five shared functions. No included dicing kit.
Ninja PREPi PN351
Six functions. Dicing kit included.
PN301 vs PN351: Side-by-Side
| Feature | PN301 | PN351 |
|---|---|---|
| Live Amazon price | $179.99 In Stock · (as of Nov 3, 7:45 PM EST – Details)Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. | See price on Amazon |
| Motor | 500W | Confirm wattage on the exact listing |
| Bowls | 5-cup + 7-cup | 5-cup + 7-cup |
| Storage lids | Included for both bowls | Included for both bowls |
| Chop / purée blade | Included | Included |
| Reversible slice / shred disc | Included | Included |
| Crinkle disc | Included | Included |
| Dicing kit | No (standard PN301) | Yes |
| Footprint | Compact prep-and-store design; exact dimensions not verified | Compact prep-and-store design; exact dimensions not verified |
Manufacturer package descriptions checked October 22, 2026. PN351 wattage and exact footprints were not independently verified; do not assume a larger motor.
What's the Same
Both standard PREPi packages center on the same five food-prep tasks: chopping, puréeing, slicing, shredding and crinkle cutting. Each includes a 5-cup bowl and a 7-cup bowl, with storage lids so you can keep prepared ingredients in the bowl rather than transfer them to another container.
The chop/purée blade is the tool for rough chopping and dips. The reversible disc covers slicing and shredding; the crinkle disc produces a wavy cut instead of a straight slice. Choose the attachment for the result you want rather than treating every ingredient as a chopping job.
The shared appeal is the prep-and-store workflow. For a small household, using one bowl to prepare vegetables and then storing that bowl can be more convenient than setting up a larger processor and finding an extra container. Bowl capacities are nominal sizes, not a promise that every recipe can fill the bowl to the rim. Follow the fill limits in the model's instructions.
The Only Real Difference: The Dicing Kit
The defining difference between the standard PN301 and PN351 packages is the included dicing kit: PN351 adds dicing as a sixth function. Standard PN301 does not include that kit. Chopping produces irregular pieces; dicing is the reason to pay extra when you specifically want more uniform cubes for soups, tray meals or vegetable prep.
Buy for the meals you actually cook. If potatoes, onions or peppers are a weekly prep job, a dicing attachment may justify the extra setup and cleanup. If you mainly make dips, shred vegetables or slice ingredients, the PN301 already covers those tasks. This is a workflow recommendation based on the listed attachments, not a hands-on timing or performance test.
Check the entire model number and contents before ordering. Ninja also lists PN301B1 dicing-kit bundles; that is not the standard PN301 package compared here. Retailer bundles and colors can change what is included. A model name alone is not enough to establish the contents of a particular offer.
Who Should Buy the PN301
Choose the standard PN301 when you mostly chop, slice, shred, crinkle-cut or purée and do not need uniform dice. It is the more focused package for someone who would otherwise leave a dicing kit unused.
It also makes sense if you prefer fewer parts to keep track of. A simple shopping test is to name three meals you cook regularly that need diced ingredients. If that is difficult, prioritize the five shared functions and compare the current prices instead of buying an attachment for a hypothetical future recipe.
Do not assume a permanent $50 saving. The actual Amazon price difference depends on the current offers, seller and bundle. When both USD prices are available, the live comparison above shows the gap; otherwise check both Amazon listings before choosing.
Who Should Buy the PN351
Choose PN351 when dicing is a regular part of your meal prep and you want the kit included from the start. Its value is the sixth cutting option, not a verified increase in motor power or a larger bowl.
A dicing kit is most compelling for someone who repeats vegetable-heavy recipes and values consistent pieces. It is less compelling if prep volume is tiny, you enjoy using a knife, or storage space for extra parts is limited. Consider how often you will assemble and wash the attachment, not just how useful it looks in a product photo.
If dicing is essential, choose an offer that explicitly includes the kit. Do not buy standard PN301 on the assumption that a separately sold upgrade is guaranteed to be available or compatible later.
Ninja Prepi vs a Regular Food Processor
PREPi is best viewed as a smaller prep-and-store system, not an automatic replacement for every conventional food processor. Its 5- and 7-cup bowls suit a different workflow from larger machines intended for batch cooking. The storage lids are particularly relevant when you want to prepare and refrigerate ingredients in the same container.
A larger processor may be a better match for big batches, dough or automated programs, depending on the exact model. Ninja's Professional Plus BN601, for example, is listed with a 9-cup bowl and dough capability. Those are meaningful differences in use, rather than a reason to assume that one machine is universally better.
Compare bowl size, included blades, dough instructions and available storage before buying. PREPi's listed food-prep functions do not establish blender-style ice crushing. If frozen drinks or ice are the priority, shop for a machine whose instructions explicitly support those tasks. No single compact prep appliance should be bought on the assumption that it does everything.
Pros & Cons of the PREPi Overall
Pros
- Two bowl sizes with storage lids for a prep-to-fridge workflow
- Five shared cutting and puréeing functions
- PN351 includes dicing for buyers who need it
- Standard PN301 avoids buying an unused dicing attachment
Cons
- 5- and 7-cup bowls are not a substitute for every large-batch processor
- Extra discs and the dicing kit need storage and cleanup
- Do not assume standard PN301 has a guaranteed retrofit kit
- Ice crushing and dough capability should not be assumed
Frequently asked questions
- Is the Ninja Prepi worth it?
- It can be worth it if you regularly chop, slice or shred ingredients and value storing them in the same bowls. Choose PN351 for included dicing; choose standard PN301 if the five shared functions cover your cooking. Compare the current price with how often you will use the attachments.
- Can you add the dicing kit to the PN301 later?
- We have not verified a separately sold kit with confirmed compatibility for an already-owned standard PN301. Ninja lists PN301B1 bundles with a dicing kit, but that does not prove a universal retrofit option. Ask Ninja to confirm the exact model and accessory number before buying; if dicing is essential, buy a package that includes it.
- Is the Ninja Prepi dishwasher safe?
- Check the exact model's care guide for which removable bowls, lids, blades and discs may go in the dishwasher and which rack to use. We have not verified a blanket dishwasher-safe claim for every PREPi part. Never put the motor unit in the dishwasher or immerse it in water; follow the manufacturer's cleaning instructions.
- Ninja Prepi vs Ninja Professional Food Processor?
- PREPi emphasizes prep and storage with 5- and 7-cup bowls. The separate Professional Plus BN601 is listed with a 9-cup bowl and dough capability. Choose by batch size, attachments and recipes rather than the word Professional; exact capabilities vary by model.
- Can the Ninja Prepi crush ice?
- Ice crushing is not one of the PREPi functions verified for this comparison. Do not use it for ice unless the exact model's manual explicitly permits it. Choose an ice-capable blender if frozen drinks are the main task.
- What colors does the Ninja Prepi come in?
- Our Amazon PN301 search returned the standard Blue model plus PN301WH and PN301BK1 variants, corresponding to Stone and Onyx in Ninja's listings. Colors and bundle contents depend on the exact model and retailer. Check the selected listing rather than assuming PN351 has every PN301 color.
Final Verdict: Buy for the Dicing Kit, Not the Model Number
Choose PN351 if you dice vegetables regularly and want the kit included. Choose standard PN301 if chopping, slicing, shredding, crinkle cutting and puréeing cover your needs. Compare current prices; the gap is not a guaranteed $50.
In Stock · (as of Nov 3, 7:45 PM EST – Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.Sources & Method
We compared the manufacturer’s listed package contents and checked Amazon Creators API searches for “Ninja PREPi PN301” and “Ninja PREPi PN351”. Prices and product imagery are Amazon data; recommendations are PicksHive’s editorial assessment. We have not tested these units or assigned a numerical rating.