Beyond the one-screen summary, these are the differences that decide the purchase.
Brewing technology: SingleStream vs MultiStream
The K-Elite carries the single-needle brew head that Keurig (Wikipedia) traces back to the original brewers. MultiStream changes the geometry: five needles spray water through the grounds from multiple angles at once, saturating the bed far more evenly.
Water reservoir and capacity
The K-Elite holds 75 oz against the K-Supreme's 66 oz. The bigger number suits households that brew all day; the smaller tank answers with a molded handle and a dual-position mount.
Controls, display, and convenience
Neither base model has a screen; both run on plain physical buttons, and the digital display belongs to the K-Supreme Plus, the next step up in the series. The K-Elite adds programmable auto on/off and a high-altitude setting; the K-Supreme counters with back-to-back brewing.
Drink sizes and customization
Five sizes against four: the K-Elite brews 4, 6, 8, 10, and 12 oz; the K-Supreme starts at 6. If you like a 4 oz cup, only the K-Elite will do it.
Design, build quality, and footprint
The K-Elite feels sturdier and more premium in hand, though lighter than the older Keurig generation. The K-Supreme is all plastic; well put together, but not built to last. The footprint favors the K-Supreme, with a rear-mounted tank option for tight counters.
Pod compatibility and ongoing K-Cup costs
Both machines take the same standard K-Cup pods, and neither accepts Vertuo or Nespresso capsules, so per-cup costs are identical. Both accept a reusable filter for your own ground coffee.
Price and value
The K-Elite runs about $120-$190 street, the K-Supreme about $90-$140, and pricing moves week to week. Pods cost the same for both, so the upfront gap is the real gap. The K-Supreme is the value play on price alone; the K-Elite closes the distance only if you use its extras.