Head-to-head · Best Smart Plugs

Amazon Smart Plug vs Kasa Matter Smart Plug KP125M

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Kasa Matter Smart Plug KP125M comes out ahead by a narrow margin (4.4 vs 4.6). The gap is mostly about smart-home builders who want one Matter plug that works across Alexa, Google, Apple, and SmartThings with energy tracking — read the strengths below before deciding.

Ranked #2 in Best Smart Plugs

Amazon Smart Plug

4.4

3 sources2 derived$24.99as of Aug 1

The Amazon Smart Plug is the frictionless choice for Alexa-only homes: auto-discovered during setup, and it slots into Alexa routines without a hitch. CNN Underscored named it best for Alexa-enabled homes and vettedhomegear rated it 4.6/5. The hard limit is that it works with nothing but Alexa, so no Google, HomeKit, or Matter, and there's no energy monitoring.

Strengths

— The simplest possible setup for Alexa households — automatically discovered
— Rock-solid, well-tested integration with the Alexa app and routines
— Compact design that fits without blocking the second outlet

Watch-outs

— Works exclusively with Alexa — no Google, HomeKit, or SmartThings
— No Matter certification, so no cross-ecosystem future-proofing
— No energy monitoring

$24.99 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Smart Plugs

Kasa Matter Smart Plug KP125M

4.6

3 sourcesall derived$20.89as of Aug 1

The KP125M takes best-overall smart plug: TP-Link's first Matter-certified plug, with genuine energy monitoring and a slim profile that doesn't block adjacent outlets. Reviewed named it their Editor's Choice best-overall pick, and Engadget named it their Best Matter Plug. The trade-offs are minor: multipack-only availability and Wi-Fi rather than Thread connectivity.

Strengths

— Matter-certified, so it works natively with Apple Home, Alexa, Google Home, and SmartThings
— Built-in energy monitoring tracks real-time and historical wattage per device
— Compact slim body lets two plugs share a standard duplex outlet

Watch-outs

— Only sold in 2-packs and 4-packs, not as a single unit
— 2.4GHz Wi-Fi only, no Thread radio for mesh networking
— HomeKit connectivity can be spotty without an Apple home hub

$20.89 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Amazon Smart Plug

The most Alexa-native pick — easier to set up in an Alexa home than even the Wyze Plug, but far less flexible: it lacks the Google support the Wyze Plug has, the Matter certification of the Tapo P125M (now unavailable) and Kasa Matter Smart Plug KP125M, and the HomeKit/Thread support of the Wemo Smart Plug with Thread.

Kasa Matter Smart Plug KP125M

The best all-rounder of the group. Unlike the Tapo P125M (now unavailable), it adds energy monitoring; unlike the Wyze Plug, it carries Matter certification for cross-ecosystem use; and unlike the Wemo Smart Plug with Thread, it isn't locked to Apple Home.

Specs side-by-side

Spec	Amazon Smart Plug	Kasa Matter Smart Plug KP125M
Protocol	Wi-Fi (2.4GHz)	Matter over Wi-Fi (2.4GHz)
Ecosystems	Alexa only	Alexa, Google Home, Apple Home, SmartThings
Energy Monitoring	No	Yes (real-time + historical)
Max Load	15A / 1800W	15A / 1800W
Hub Required	No	No
Form Factor	Compact	Slim (non-blocking)
App	Alexa app (no separate app)	—
Setup	Auto-discovered by Alexa	—
Certification	—	UL listed
Pack Sizes	—	2-pack, 4-pack
Material	—	Plastic

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