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Freedom251 › Blog › coffee maker comparison

Five Rated Keurig Single-Cup Coffee Makers Compared for Every Counter and Routine

By Freedom251 Team · · 13 min read

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These five reviewed single-cup coffee makers are all Keurig models, so they are not a market-wide ranking of every brand. Among the group, the K-Slim is the clearest choice for a five-inch-wide counter, the K-Supreme Single Serve Coffee Maker Gen 2 offers the broadest manual strength and temperature control, and the K-Supreme Plus SMART combines the largest stated reservoir with connected brewing and five cup sizes. The K-Supreme SMART is the option to examine if you need phone control and a dual-position tank, while the K-Supreme Plus targets households that want three-user favorites without the SMART model’s stated connectivity requirements. Keurig’s displayed ratings are customer-review snapshots captured in 2026, not independent laboratory tests, and both scores and review counts can change.

Which five single-cup coffee makers are covered?

The comparison covers five Keurig brewers surfaced on current Keurig product pages. Because every entry comes from one manufacturer and the pages use different customer-review totals rather than a common cross-brand test, “top rated” should be read as a review of five rated options, not proof that these are the five highest-rated single-cup brewers available.

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Model Stated cup sizes Reservoir Controls and connectivity Keurig-hosted rating snapshot
K-Supreme Single Serve Coffee Maker Gen 2 6, 8, 10 and 12 ounces Removable 72 ounces Three strength selections, three temperature selections and hot-over-ice brewing 4.8/5 from 181 reviews, accessed 2026
K-Supreme Plus SMART Single Serve Coffee Maker Five sizes from 4 to 12 ounces Removable 78 ounces BrewID, MultiStream and hot-over-ice brewing 4.3/5 from 2,408 reviews, accessed 2026
K-Slim Single Serve Coffee Maker 8, 10 and 12 ounces Removable 46 ounces Compact 5-inch width 4.1/5 from 1,780 reviews, accessed 2026
K-Supreme SMART Single Serve Coffee Maker Four brew sizes; exact ounce values are not stated in the cited product excerpt 66-ounce dual-position reservoir BrewID and connected features; phone compatibility and Wi-Fi requirements apply 4.3/5 from 1,138 reviews, accessed 2026
K-Supreme Plus Single Serve Coffee Maker Sizes from 4 to 12 ounces 78 ounces MultiStream, three strength settings, three temperature settings and favorites for up to three users Not stated in the cited product excerpt

The four numerical ratings are dynamic figures displayed by Keurig when the pages were accessed in 2026. They indicate how customers rated each product on its own page; they do not normalize brewing conditions, price, ownership period or review-verification practices.

How do the five models differ in everyday use?

The practical dividing lines are counter width, how often you want to refill, how much control you want over a brew, and whether a phone-connected workflow is useful. The table below translates the manufacturer specifications into those decisions without treating an inference as a measured performance result.

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Minimum counter width K-Slim Keurig states a 5-inch width Its reservoir is the smallest at 46 ounces and it offers only 8-, 10- and 12-ounce choices
Manual strength and temperature adjustment K-Supreme Gen 2 Three strength and three temperature selections No connected or app features are stated on the cited page
Largest tank plus five cup choices K-Supreme Plus SMART 78-ounce removable reservoir and five sizes from 4 to 12 ounces The displayed rating is a customer snapshot, not an independent test
Phone-connected brewing in a compact-placement layout K-Supreme SMART 66-ounce dual-position tank, BrewID and connected features Setup needs a compatible phone and a 2.4 GHz WPA2-PSK network
Shared household presets without a stated app requirement K-Supreme Plus Favorites can be programmed for up to three users, with three strength and three temperature settings The cited excerpt does not provide a customer-rating figure

What is the Keurig K-Supreme Single Serve Coffee Maker Gen 2 like?

The K-Supreme Gen 2 is the most control-oriented non-SMART option in this set. Keurig lists four serving sizes—6, 8, 10 and 12 ounces—along with three strength selections and three temperature selections. It also supports hot-over-ice brewing, so the same machine can make a concentrated hot brew intended to be poured over ice.

Reservoir and refill implications

Its removable reservoir holds 72 ounces. Capacity is larger than the K-Slim’s 46 ounces and the K-Supreme SMART’s 66 ounces, but smaller than the 78-ounce tanks on the two K-Supreme Plus models. As a planning exercise, a full 72-ounce tank contains six theoretical 12-ounce portions or nine theoretical 8-ounce portions; actual refill timing depends on the selected size and water retained by the machine.

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Who should consider it?

Consider this model when you regularly change brew intensity or temperature and want those controls directly on the brewer. Keurig’s page displayed 4.8 out of 5 from 181 reviews when accessed in 2026. That is the highest displayed score among the four models with a reported rating, but the smaller review count and manufacturer-hosted format mean it should not be treated as a statistically controlled ranking.

What is the Keurig K-Supreme Plus SMART like?

The K-Supreme Plus SMART combines the broadest stated size range in this comparison with the largest stated removable reservoir. Keurig identifies BrewID, MultiStream technology, five cup sizes from 4 through 12 ounces, hot-over-ice brewing and a 78-ounce tank.

Size flexibility

Having five listed sizes gives you more increments than the four-size Gen 2 and the three-size K-Slim. The 4-ounce setting can suit a smaller, more concentrated serving, while the upper settings cover a conventional mug range; the product page does not establish extraction strength, caffeine content or taste at any setting, so those should not be inferred from volume alone.

Rating context

The page displayed 4.3 out of 5 from 2,408 reviews in 2026. The larger review count provides more customer responses than the Gen 2 snapshot, but a count alone does not make ratings directly comparable because the reviews may reflect different buyers, prices and ownership dates.

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Who should consider it?

This is the logical first page to open if you want a large tank, five selectable volumes and the SMART product line’s BrewID features. Confirm the current app, connectivity and accessory details on the live product page before purchase, because those details can change.

Is the Keurig K-Slim the best choice for a narrow counter?

It is the strongest narrow-counter candidate in this group because Keurig states that the brewer is 5 inches wide. That positioning is an inference from the published width, not a measurement of how much clearance your cabinets, cord and water access require.

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What you give up for the slim footprint

The K-Slim offers 8-, 10- and 12-ounce cups, omitting the smaller choices listed for the K-Supreme Plus models and the 6-ounce Gen 2 setting. Its removable reservoir is 46 ounces, the smallest in the comparison. A theoretical full tank covers three 12-ounce portions with 10 ounces left, or five 8-ounce portions with 6 ounces left; refill frequency will vary with the amount dispensed and water used during brewing.

Rating and fit

Keurig’s page displayed 4.1 out of 5 from 1,780 reviews in 2026. That score is lower than the other displayed snapshots, but the difference does not identify a specific cause and should not be converted into a durability or taste claim. Measure the available width and the space needed to remove the 46-ounce tank before treating the five-inch figure as a guaranteed fit.

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What does the Keurig K-Supreme SMART add?

The K-Supreme SMART is the connected model with a 66-ounce dual-position reservoir. It lists four brew sizes, BrewID and other connected features, and it works with the My K-Cup Universal Reusable Coffee Filter according to Keurig’s product page.

Phone and network requirements

Keurig specifies iOS 15.1 or later or Android 9 or later for phone compatibility. Wi-Fi setup is optimized for a 2.4 GHz network using WPA2-PSK and is not compatible with 5 GHz networks. If your router combines bands under one network name, you may need to select or temporarily expose the 2.4 GHz band during setup; the product page’s 2.4 GHz limitation is the deciding requirement.

Reservoir placement

The dual-position design is relevant when the brewer must sit beside a wall, cabinet or another appliance. “Dual-position” describes the tank’s placement options, not a stated increase in capacity. At 66 ounces, its tank sits between the 46-ounce K-Slim and the 72- and 78-ounce models.

Rating snapshot

The page displayed 4.3 out of 5 from 1,138 reviews when accessed in 2026. As with the other figures, this is a Keurig-hosted customer snapshot and can change as new reviews are added.

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What does the Keurig K-Supreme Plus offer without the SMART label?

The K-Supreme Plus keeps several enthusiast-oriented controls while adding household presets. Keurig lists MultiStream technology, three strength settings, three temperature settings, cup sizes from 4 to 12 ounces, and a 78-ounce reservoir.

Shared-user presets

Favorites can be programmed for up to three users. That is useful when people in one household repeatedly choose different combinations of size, strength and temperature; the specification does not state how many favorites each person can save beyond the “up to three users” designation.

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How it compares with the SMART versions

The cited product excerpt for this model does not state BrewID, phone operating-system support or Wi-Fi requirements. Do not assume that the word “Plus” means the same connectivity as “SMART.” Check the exact model name and current feature list before choosing it for a connected setup.

Rating availability

No customer-rating snapshot was provided for this model in the cited excerpt, so it cannot be ranked alongside the four models with displayed scores.

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Which model has the largest reservoir, and how much does that matter?

The K-Supreme Plus SMART and K-Supreme Plus share the largest stated capacity at 78 ounces. The Gen 2 follows at 72 ounces, the K-Supreme SMART at 66 ounces, and the K-Slim at 46 ounces.

Model Reservoir capacity Theoretical 8-ounce portions from a full tank* Theoretical 12-ounce portions from a full tank*
K-Supreme Plus SMART 78 ounces 9 full portions, with 6 ounces remaining 6 full portions, with 6 ounces remaining
K-Supreme Plus 78 ounces 9 full portions, with 6 ounces remaining 6 full portions, with 6 ounces remaining
K-Supreme Gen 2 72 ounces 9 full portions 6 full portions
K-Supreme SMART 66 ounces 8 full portions, with 2 ounces remaining 5 full portions, with 6 ounces remaining
K-Slim 46 ounces 5 full portions, with 6 ounces remaining 3 full portions, with 10 ounces remaining

*These are simple capacity calculations, not promised brew counts. A brewer may retain water or require a minimum level, and selected volume can differ from the amount consumed from the tank.

A larger reservoir reduces the number of refills in a busy household, but it also occupies more space and holds more water between uses. If your priority is a narrow footprint rather than refill avoidance, the K-Slim’s 46-ounce tank is the relevant compromise. If several people brew throughout the day, the 78-ounce models provide the greatest stated buffer.

Which models let you adjust strength, temperature or iced brewing?

The clearest manual controls are on the K-Supreme Gen 2 and K-Supreme Plus. Both list three strength choices and three temperature choices. The Gen 2 and K-Supreme Plus SMART also explicitly list hot-over-ice brewing, while the cited specifications for the K-Slim and K-Supreme SMART do not state those features.

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Feature Gen 2 Plus SMART K-Slim SMART Plus
Strength selections stated Three Not stated in cited excerpt Not stated Not stated Three
Temperature selections stated Three Not stated in cited excerpt Not stated Not stated Three
Hot-over-ice stated Yes Yes Not stated Not stated Not stated
MultiStream stated Not stated in cited excerpt Yes Not stated Not stated Yes

“Not stated” means the cited product material did not establish the feature; it does not prove the machine cannot perform it. Use the exact model’s current specification page when a control is essential to your routine.

How should you evaluate BrewID and connected brewing?

BrewID appears on the K-Supreme Plus SMART and K-Supreme SMART pages. The SMART designation therefore identifies a connected feature set, but only the K-Supreme SMART page in this comparison states the phone operating-system and Wi-Fi requirements.

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Before choosing a connected model

  • Check that the phone uses iOS 15.1 or later or Android 9 or later if you are considering the K-Supreme SMART.
  • Confirm that your home network can provide 2.4 GHz WPA2-PSK service; the stated setup is not compatible with 5 GHz networks.
  • Decide whether app or BrewID functions solve a real routine problem. If you only need physical strength and temperature controls, the Gen 2 or K-Supreme Plus specifications may be more relevant.
  • Verify current software and account requirements on Keurig’s live page because connected-service details can change independently of the brewer’s hardware.

What reusable-filter support is documented?

The K-Supreme SMART product page states compatibility with the My K-Cup Universal Reusable Coffee Filter. That is the only named reusable-filter compatibility in the supplied product information. The absence of a named filter for another model is not evidence of incompatibility; it means the cited material does not establish one.

If reusable grounds are a deciding factor, match the filter’s exact compatibility statement to the model name, not merely to the “K-Supreme” family label. Product families contain different reservoirs, controls and connectivity, so a family-level assumption can lead to the wrong accessory.

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How can you choose the right model in five steps?

  1. Measure the installation space. Record usable width, overhead clearance and the room needed to remove or refill the tank. The K-Slim’s published width is 5 inches, but your counter must also accommodate access around it.
  2. Estimate daily water use. Add the cup sizes you normally select and compare that total with 46, 66, 72 or 78 ounces. Treat the arithmetic as an estimate, not a guaranteed number of brews.
  3. List the controls you will actually use. Choose the Gen 2 or Plus if three strength and three temperature settings are central; choose a model with five listed sizes if fine-grained volume selection matters.
  4. Decide whether connectivity is essential. Select a SMART model only after checking phone and 2.4 GHz network requirements. Otherwise, a non-SMART model may avoid setup dependencies.
  5. Check accessory needs and current page details. The K-Supreme SMART is the model with named My K-Cup Universal Reusable Coffee Filter compatibility in the cited material. Recheck current ratings, review counts, specifications, prices and availability immediately before ordering.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

What should you verify before buying?

Product pages and ratings are changeable, and the figures here were captured in 2026. Open the current page for the exact model rather than relying on a family name or an older comparison.

  • Exact cup sizes: The five machines do not share one common size menu. The K-Slim, for example, lists 8, 10 and 12 ounces, while the K-Supreme Plus models list sizes from 4 to 12 ounces.
  • Reservoir placement: A removable tank still needs enough clearance to lift out or fill. The K-Supreme SMART’s dual-position design may help, but the page does not state the exact side-to-side dimensions for your counter.
  • Connectivity: Confirm operating-system versions and 2.4 GHz WPA2-PSK support if you select the K-Supreme SMART.
  • Rating date and count: Record both the score and review total because they can change. Do not compare a current score with an old screenshot as if they were simultaneous.
  • Reusable filter: Verify that the filter accessory is listed for your exact brewer. The documented match in this set is the K-Supreme SMART with the My K-Cup Universal Reusable Coffee Filter.
  • Price and stock: These were not fixed by the supplied specifications and can vary by region, promotion and date. Check the seller and current Keurig listing at checkout.

How should you interpret the displayed ratings?

The ratings are useful as a snapshot of customer sentiment on each Keurig page, not as a controlled product test. The four displayed figures are 4.8/5 from 181 reviews for the Gen 2, 4.3/5 from 2,408 for the K-Supreme Plus SMART, 4.1/5 from 1,780 for the K-Slim, and 4.3/5 from 1,138 for the K-Supreme SMART.

Those numbers have different review populations and no common test protocol. They do not establish which brewer makes better-tasting coffee, lasts longer or is quieter. Use the score as one input alongside reservoir size, physical fit, controls and connectivity, and treat the K-Supreme Plus as unrated in this comparison because the cited excerpt did not provide a figure.

Which of the five is the best match for your priorities?

Choose the K-Supreme Gen 2 for hands-on control

Its stated combination of three strength settings, three temperature settings, four cup sizes and hot-over-ice brewing suits someone who wants to adjust the brew at the machine. The 72-ounce tank is substantial without being the largest.

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Choose the K-Supreme Plus SMART for volume flexibility and fewer refills

Its 78-ounce reservoir and five sizes from 4 to 12 ounces make it the most flexible on the listed volume specifications. BrewID and MultiStream are part of the stated feature set, while the displayed 4.3/5 score comes from a large Keurig-hosted review pool.

Choose the K-Slim when width is the constraint

The published 5-inch width is its defining advantage in this group. Accept the smaller 46-ounce tank and narrower 8-, 10- and 12-ounce menu in exchange for a more space-conscious design.

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Choose the K-Supreme SMART for connected features and tank-placement flexibility

It pairs BrewID and connected features with a 66-ounce dual-position reservoir and documented compatibility with the My K-Cup Universal Reusable Coffee Filter. It is the model with the clearest stated network and phone prerequisites, so verify those before buying.

Choose the K-Supreme Plus for shared presets without relying on a stated SMART setup

Its 78-ounce tank, 4-to-12-ounce range, MultiStream, and three strength and temperature settings are complemented by favorites for up to three users. The cited material does not provide a rating snapshot or establish phone connectivity, so evaluate it from its physical controls and household profile needs.

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What is the final takeaway?

There is no evidence here for a universal number-one brewer across the entire single-cup market. Within these five Keurig options, match the machine to the constraint that will affect you every day: K-Slim for a 5-inch-width target, Gen 2 for explicit manual strength and temperature controls, either K-Supreme Plus model for a 78-ounce tank, K-Supreme Plus SMART for five volume choices and BrewID, or K-Supreme SMART for connected features, a dual-position tank and the documented reusable-filter match. Recheck the exact current product page because ratings, review counts, prices, stock and connected-service requirements are volatile.

Frequently Asked Questions

Are these really the five highest-rated single-cup coffee makers on the market?

No. All five are Keurig models drawn from manufacturer product pages, and no cross-brand scoring method was supplied. They are best understood as five reviewed options rather than a market-wide ranking.

How many cups can a full reservoir actually brew?

Capacity divided by your selected cup size gives only a theoretical count. For example, a 78-ounce tank equals six 12-ounce portions plus six ounces, but retained water and minimum-level requirements can reduce the usable count.

What does a dual-position reservoir mean when installing the brewer?

It refers to having more than one placement orientation for the tank, which can help when the brewer sits near a wall or another appliance. It does not mean the reservoir holds more water than its stated 66 ounces.

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Can I use one reusable filter across every K-Supreme model?

The documented compatibility in this comparison is specifically the K-Supreme SMART with the My K-Cup Universal Reusable Coffee Filter. Check the accessory listing for the exact model before assuming a family-wide match.

Why might a 4.3 rating be preferable to a 4.8 rating for some buyers?

A score is only one signal; review volume, counter fit, reservoir size and required controls may matter more to your routine. The displayed scores were collected from separate Keurig pages and are not results from a shared test.

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.

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