iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Choose the Ninja PB051 if you want to brew either ground coffee or pods, adjust grounds servings up to 24 ounces, or make milk-topped drinks with a built-in frother. Choose the Keurig K-Supreme if you mainly use K-Cup pods and value four preset cup sizes, a larger reservoir, and immediate back-to-back brewing. Those are differences in listed features—not evidence that one makes better-tasting coffee or lasts longer.
How the Ninja PB051 and Keurig K-Supreme compare
This comparison is specifically between SharkNinja’s PB051 Single-Serve Pods & Grounds Specialty Coffee Maker and Keurig’s K-Supreme. The PB051 accepts grounds and pods; the K-Supreme is designed for K-Cup pods and is compatible with Keurig’s separately sold My K-Cup reusable filter.
| Feature | Ninja PB051 | Keurig K-Supreme |
|---|---|---|
| Brewing input | Ground coffee or pods; a Ninja Pod Adapter is included. SharkNinja product specifications | K-Cup pods; compatible with the separately sold My K-Cup Universal Reusable Coffee Filter. Keurig product specifications |
| Serving sizes | Grounds: 6, 8, 10, 12, 14, 18, or 24 oz. Pods: 6, 8, 10, or 12 oz. SharkNinja product specifications | 6, 8, 10, or 12 oz. Keurig product specifications |
| Brew options | Classic, Rich, Over Ice, and Specialty. SharkNinja product specifications | Regular brewing, a Strong button, and hot-over-ice brewing. Keurig product specifications |
| Reservoir | Removable 56 oz. SharkNinja product specifications | Removable 66 oz, with dual-position placement. Keurig product specifications |
| Milk frother | Built-in fold-away frother. SharkNinja product specifications | No milk frother, according to Keurig’s product comparison chart. Keurig product specifications |
| Consecutive brewing | Not stated on the cited product page. SharkNinja product specifications | Keurig says it supports immediate back-to-back brewing without a reheating wait. Keurig product specifications |
| Reusable-filter setup | A permanent filter and Ninja Pod Adapter are listed as included. For grounds, the manual directs users to the Ninja grounds adapter with a paper or permanent filter. SharkNinja product specifications; Ninja owner’s guide | My K-Cup Universal Reusable Coffee Filter is sold separately. Keurig product specifications |
The figures in this table are manufacturer-listed specifications available on October 4, 2026. They do not compare measured brewing speed, temperature, taste, reliability, or long-term ownership.
Which one fits your coffee routine?
Choose the Ninja PB051 for grounds, larger servings, and frothing
The PB051 is the more flexible choice if you switch between ground coffee and pods. Its grounds settings include servings up to 24 ounces, while its pod settings go up to 12 ounces. The built-in fold-away frother is useful if you want to add frothed milk without buying a separate frother.
#1 Best Overall
- QUALITY COFFEE: This one cup coffee maker delivers single-serve convenience without sacrificing delicious, full-bodied, flavorful brewing. Designed with our patented Thermal Flavor Extraction system for consistent temperature, even saturation, and calibrated brewing cycles.
- EASY TO USE: Compatible with both pods and grounds, this single cup coffee maker features intuitive, versatile controls to easily brew the exact cup you're looking for. Choose from 4 different brew styles and multiple cup sizes.
- ICED COFFEE MAKER: Features 4 brew styles, including Over Ice, perfect for a refreshing cold brew on a hot summer day. Classic, Rich, and Specialty offer versatile choices ranging from medium to bold and concentrated.
- MILK FROTHER: Use the Specialty brew style to create a rich coffee concentrate, then add creamy frothed milk for cafe-style lattes, mochas, cappuccinos, and more. The built-in milk frother easily folds away for a convenient, space-saving profile.
- DESIGNED FOR CONVENIENCE: Brew cups anywhere from 6 to 24 oz. Adjustable drip tray easily fits travel mugs for busy commuters. 56 oz removable reservoir delivers simple and mess-free refilling. Comes with built-in frother, Ninja Scoop, removable brew basket, Ninja pod adapter, and permanent filter.
Its four brew styles are Classic, Rich, Over Ice, and Specialty. SharkNinja describes Specialty as making coffee concentrate for coffeehouse-style drinks. That is the manufacturer’s stated function; it should not be read as a claim that the machine makes espresso.
Choose the K-Supreme for a pod-led routine and a larger reservoir
If you mostly use K-Cup pods and want a machine with four straightforward cup sizes, the K-Supreme offers 6-, 8-, 10-, and 12-ounce options. Its 66-ounce reservoir is 10 ounces larger than the PB051’s, and Keurig says it can brew consecutive cups without waiting for reheating.
Rank #2
- QUALITY COFFEE: This one cup coffee maker delivers single-serve convenience without sacrificing delicious, full-bodied, flavorful brewing. Designed with our patented Thermal Flavor Extraction system for consistent temperature, even saturation, and calibrated brewing cycles.
- EASY TO USE: Compatible with both pods and grounds, this single cup coffee maker features intuitive, one-touch controls to easily brew the exact cup you're looking for. Choose from 4 different brew types and multiple cup sizes.
- ICED COFFEE MAKER: Features 4 brew styles, including Over Ice, perfect for a refreshing cold brew on a hot summer day. Classic, Rich, and Specialty offer versatile choices ranging from medium to bold and concentrated.
- MILK FROTHER: Use the Specialty brew style to create a rich coffee concentrate, then add creamy frothed milk for cafe-style lattes, mochas, cappuccinos, and more. The built-in milk frother easily folds away for a convenient, space-saving profile.
- DESIGNED FOR CONVENIENCE: Brew cups anywhere from 6 to 24 oz. Adjustable drip tray easily fits travel mugs for busy commuters. 56 oz removable reservoir delivers simple and mess-free refilling. Comes with built-in frother, Ninja Scoop, removable brew basket, Ninja pod adapter, and permanent filter.
The K-Supreme also has a Strong button and a hot-over-ice option. Those controls add choice within a pod-focused workflow, but they do not provide the PB051’s grounds-serving range or built-in frother.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Check filter compatibility before buying accessories
Do not assume a reusable K-Cup filter fits the Ninja’s pod adapter. Ninja’s owner’s guide says reusable K-Cup coffee filters are not compatible with the Ninja Pod Adapter. For the PB051’s grounds workflow, use its Ninja grounds adapter with a paper or permanent filter. The PB051 product page lists a permanent filter and pod adapter among the included items; Keurig lists My K-Cup as a separate purchase.
Rank #3
- QUALITY COFFEE: This one cup coffee maker delivers single-serve convenience without sacrificing delicious, full-bodied, flavorful brewing. Designed with our patented Thermal Flavor Extraction system for consistent temperature, even saturation, and calibrated brewing cycles.
- EASY TO USE: Compatible with both pods and grounds, this single cup coffee maker features intuitive, one-touch controls to easily brew the exact cup you're looking for. Choose from 4 different brew types and multiple cup sizes.
- ICED COFFEE MAKER: Features 4 brew styles, including Over Ice, perfect for a refreshing cold brew on a hot summer day. Classic, Rich, and Specialty offer versatile choices ranging from medium to bold and concentrated.
- MILK FROTHER: Use the Specialty brew style to create a rich coffee concentrate, then add creamy frothed milk for cafe-style lattes, mochas, cappuccinos, and more. The built-in milk frother easily folds away for a convenient, space-saving profile.
- DESIGNED FOR CONVENIENCE: Brew cups anywhere from 6 to 24 oz. Adjustable drip tray easily fits travel mugs for busy commuters. 56 oz removable reservoir delivers simple and mess-free refilling. Comes with built-in frother, Ninja Scoop, removable brew basket, Ninja pod adapter, and permanent filter.
Retail bundles can differ, so check the contents for the exact model and listing before comparing setup costs. Confirm that any replacement filter or accessory is specified for your machine and intended brewing method.
Confirm the exact model and current bundle
Make sure a listing is for PB051, not the Ninja PB041. The PB041 is a different model: its official information lists three brew styles and no built-in frother, unlike the PB051’s four styles and frother. Do not transfer features or accessory assumptions from one model to the other. SharkNinja PB041 product information; SharkNinja PB051 product specifications.
Rank #4
- BREW WITH PODS OR GROUNDS: Brew a single-serve cup of coffee with grounds for ultimate flavor or with a coffee pod for ultimate convenience in one small footprint.
- 3 BREW STYLES: Select Classic, Rich, or Over Ice for your grounds or coffee pods.
- ULTIMATE BREW VERSATILITY: Brew a 6, 8, 10, or 12-oz. pod brew or choose from a 6, 8, 10, 12, 18, or 24-oz. grounds brew. Brew more drink options vs. a leading single-serve coffee maker.
- COMPACT DESIGN AND STORAGE: Sleek, compact design takes up little countertop space, with a storage drawer for the brew basket or permanent filter when not in use.
- ICED COFFEE: Brew fresh coffee over ice for a flavorful cup or travel mug that is never diluted.
Prices, stock, regional model details, and bundle contents can change. Check the current listing for the exact SKU and included accessories; the specifications above do not establish current price or availability.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →What the specifications cannot tell you
Manufacturer feature lists clarify the machines’ brewing options and included components, but they do not establish which coffee tastes better, brews faster, or holds up longer. No controlled comparative results are cited here, so choose based on the workflow and features you will use rather than a presumed taste or durability winner.
Best Value
- QUALITY COFFEE: This one cup coffee maker delivers single-serve convenience without sacrificing delicious, full-bodied, flavorful brewing. Designed with our patented Thermal Flavor Extraction system for consistent temperature, even saturation, and calibrated brewing cycles.
- EASY TO USE: Compatible with both pods and grounds, this single cup coffee maker features intuitive, one-touch controls to easily brew the exact cup you're looking for. Choose from 4 different brew types and multiple cup sizes.
- ICED COFFEE MAKER: Features 4 brew styles, including Over Ice, perfect for a refreshing cold brew on a hot summer day. Classic, Rich, and Specialty offer versatile choices ranging from medium to bold and concentrated.
- MILK FROTHER: Use the Specialty brew style to create a rich coffee concentrate, then add creamy frothed milk for cafe-style lattes, mochas, cappuccinos, and more. The built-in milk frother easily folds away for a convenient, space-saving profile.
- DESIGNED FOR CONVENIENCE: Brew cups anywhere from 6 to 24 oz. Adjustable drip tray easily fits travel mugs for busy commuters. 56 oz removable reservoir delivers simple and mess-free refilling. Comes with built-in frother, Ninja Scoop, removable brew basket, Ninja pod adapter, and permanent filter.
Keurig says the K-Supreme provides a descale reminder after every 250 brews. That is the manufacturer’s stated reminder interval, not a comparative measure of maintenance effort.
Quick Recap
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.
