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Voice Assistants · Head to head

Amazon Echo Show 15 (2nd Gen) vs Amazon Echo Show 21

Full Voice Assistants comparison in 2026

Updated October 2026
Data from Amazon.
2026 verdict
Fifteen inches or twenty-one? The Amazon Echo Show 21 beats the Amazon Echo Show 15 on the one spec that separates them, a 21-inch screen instead of 15.6 inches.
Amazon Echo Show 21
Winner
Amazon Echo Show 21
$349.99$499.9930% OFF
Buy on Amazon USACheck price
Everything else matches: the same 1920 x 1080 resolution, Wi-Fi 6E, a Zigbee coordinator, Thread border router and Matter bridge, a camera with a hardware off switch, a motion sensor and wall mounting. The Amazon Echo Show 15 is the more affordable, lighter panel, at 2.25 kg against about 4.8 kg, and suits a hallway or a smaller kitchen wall. Pick the Amazon Echo Show 21 when the screen doubles as the room's TV, and the Amazon Echo Show 15 when it is mainly a family calendar and smart home panel.
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FeatureAmazon Echo Show 15 (2nd Gen)Amazon Echo Show 21Winner
Price$249.99$349.99Amazon Echo Show 15 (2nd Gen)
Screen Size15.6"21"Amazon Echo Show 21
Rating4.44.4Tie
Warranty1 year1 yearTie
Connectivity2.4 GHz WiFi, 5 GHz WiFi, 6 GHz WiFi, Bluetooth2.4 GHz WiFi, 5 GHz WiFi, 6 GHz WiFi, BluetoothTie
IntegrationsAlexa, Home AssistantAlexa, Home AssistantTie
HubZigbee Coordinator, Thread Border Router, Matter BridgeZigbee Coordinator, Thread Border Router, Matter BridgeTie
ScreenYESYESTie
SensorsMotion, Ambient LightMotion, Ambient LightTie
AlertsGlass breaking, Smoke/CO alarmGlass breaking, Smoke/CO alarmTie
Voice MatchYESYESTie

What the differences mean

Screen size

21 inches against 15.6, both at 1920 x 1080. The Amazon Echo Show 21 is the one you can watch from across an open kitchen or living room; the Amazon Echo Show 15 packs the same pixels into a smaller panel that looks sharper up close.

Wall footprint

The Amazon Echo Show 21 measures 540 x 350 mm on the wall, the Amazon Echo Show 15 400 x 250 mm. Both are under 4 cm deep, so the question is how much wall you want to give it.

Weight

About 4.8 kg for the Amazon Echo Show 21 against 2.25 kg for the Amazon Echo Show 15. Both are built to be wall-mounted, but the larger one needs a mounting point that takes the weight.

Which one to buy if

  • the screen will also be the kitchen TV
    Amazon Echo Show 21

    The 21-inch panel is the one owners watch from across the room.

  • it is mainly a family calendar in a hallway
    Amazon Echo Show 15 (2nd Gen)

    The Amazon Echo Show 15 does the same job with a smaller footprint and at a lower cost.

  • your wall space is narrow
    Amazon Echo Show 15 (2nd Gen)

    At 400 x 250 mm it fits where a 540 mm wide panel does not.

  • you watch from a sofa or dining table, not up close
    Amazon Echo Show 21

    Same resolution, but the larger screen is the one that reads at a distance.

What owners say

Owners of both big Echo Shows praise the same things: a sharp Full HD screen that is easy to read, built-in Fire TV that turns it into a kitchen television, and a quick setup as a shared family hub. Both groups also report rough edges since Amazon began rolling out Alexa+. Amazon Echo Show 15 owners note the screen is easy to read for older eyes and a big step up from smaller Echo Shows, and mention it comes in only one finish. Amazon Echo Show 21 owners stress that it reads well from across the room, but complain that the speakers feel underwhelming for a screen this large and that syncing a Google or Apple calendar is limited.

Upgrading from the Amazon Echo Show 15 (2nd Gen)?

Moving from the Amazon Echo Show 15 to the Amazon Echo Show 21 buys one thing: a bigger screen, 21 inches instead of 15.6, at the same 1920 x 1080 resolution. The camera and its off switch, Wi-Fi 6E, the Zigbee, Thread and Matter hub, the motion sensor, wall mounting and the one year warranty are all the same. If your Amazon Echo Show 15 is readable from where you use it, there is nothing new to gain; the upgrade only makes sense if you now watch it from across a larger room.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Amazon Echo Show 15 (2nd Gen)
  • Amazon Echo Show 21

Loading price history...

Frequently Asked Questions

Which is better: Amazon Echo Show 15 or Amazon Echo Show 21?

The Amazon Echo Show 21 if you want the biggest screen for watching TV across a room. Otherwise the Amazon Echo Show 15 does the same things with the same resolution, hub and camera in a smaller, lighter panel.

What is the difference between the Echo Show 15 and the Echo Show 21?

Screen size, and the size and weight that come with it. The Amazon Echo Show 21 has a 21-inch screen and weighs about 4.8 kg; the Amazon Echo Show 15 has 15.6 inches and weighs 2.25 kg. Both are 1920 x 1080 with the same camera, Wi-Fi 6E and Zigbee, Thread and Matter hub.

How big are the Amazon Echo Show 15 and the Amazon Echo Show 21?

The Amazon Echo Show 15 measures 400 x 250 x 35 mm and the Amazon Echo Show 21 540 x 350 x 38 mm, so the larger one takes almost twice the wall area at nearly the same depth.

Do the Amazon Echo Show 15 and the Amazon Echo Show 21 have the same smart home hub?

Yes. Both the Amazon Echo Show 15 and the Amazon Echo Show 21 are a Zigbee coordinator, Thread border router and Matter bridge, and both work with Alexa only, with partial Home Assistant support.

Who should buy the Amazon Echo Show 15?

Alexa households that want a wall-mounted family calendar, camera and smart home panel for a hallway or a smaller kitchen.

Who should buy the Amazon Echo Show 21?

Alexa households that want one large wall screen to double as the kitchen or living room TV, viewed from across the room.

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