Keurig K400 vs K450: What's The Difference?

Keurig K400 vs K450 — do you know the 1 difference between these nearly identical models?

The K400 series of brewers is a big step up from the K200 and K300 models:

  • Larger water reservoir
  • Adds Auto-On functionality
  • First instance of a color display
  • Additional features such as customizable wallpaper

Within the K400 series there are 4 different models: K400, K425, K450 and K475.

The two we’re looking at here at the only ones in the K400 series to come with the Keurig carafe, giving you the ability to brew up to 30 oz servings.

If that included accessory isn’t the difference, what is?

We explain in our Keurig K400 vs K450 Showdown.

Keurig K400 vs K450: The Differences

There’s only one difference between these models:

The K450 comes with the water filter starter kit while the K400 doesn’t.

There are only two times when you’d want to get the K400:

  1. You already have a Brita, Purr or other water filter and thus don’t need the included kit
  2. You can get the K400 for more than $12 less than the K450.

This starter kit goes for around $12 online, so click the Check Current Price buttons in the table above.

If the K400 can be had for much less and you do want the included water filter starter kit, it’s probably worth it to buy them separately.

Evaluating the Entire K400 Series

Things get confusing fast in the Keurig universe. The company has multiple model numbers in the K400 series, but they’re all the same machine.

The difference is in the included accessories:

  • Water filter starter kit
  • Keurig 2.0 My K-Cup
  • Keurig carafe

What about the entire Keurig 2.0 line?

Keurig makes 4 different versions of their Keurig 2.0 brewers. Here's how they all compare:

FeatureK200K300K400K500
Reservoir40 oz60 oz70 oz80 oz
Display2.4" b+w touch2.4" b+w touch2.4" color touch2.8" XL color touch
Max K-Cup Brew Size16 oz16 oz16 oz18 oz
Strength ControlYesYesYesYes
Temp ControlNoYesYesYes
Customizable ClockNoYesYesYes
Customizable WallpaperNoYesYesYes
Set FavoritesNoYesYesYes
Hot Water ModeNoNoNoYes
Iced ModeNoNoNoYes
Water Tank NightlightNoNoNoYes

K400 brewers are nearly the best and represent a solid value if you don't need all of the extra features that the top-of-the-line K500 brewers offer.

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About The Coffee Maven
bryan de luca
Bryan De Luca

I'm Bryan but most people know me as The Coffee Maven. I grew up outside Boston, Massachusetts and received my Bachelor's degree in Biochemistry from Providence College. My first introduction to coffee was during my college days, when I used it as a source of caffeine to fuel late-night study sessions, but soon I became obsessed with the chemistry of coffee. How did changes to water temperature or contact time affect its taste? Why do beans from Africa taste fruity while beans from Indonesia taste spicy? I launched The Coffee Maven in February 2017 to explore these questions and help others brew their perfect cup. Welcome to my site, and thanks for reading!