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 clear margin (4.6 vs 3.6). Kasa Matter Smart Plug KP125M is best for: 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 #4 in Best Smart Plugs

Amazon Smart Plug

3.6

3 sources$24.99as of Oct 16

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 found it "seamless to set up and use" inside the Alexa ecosystem. The hard limit is that it works with nothing but Alexa, so no Google, HomeKit, or Matter, and there's no energy monitoring.

Strengths

— Rock-solid, well-tested integration with the Alexa app and routines
— Compact design that fits without blocking the second outlet
— No separate app or account needed beyond Alexa

Watch-outs

— Works exclusively with Alexa — no Google, HomeKit, or SmartThings
— 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

2 sourcesall derived$29.99as of Oct 16

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

$29.99 · 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 Amazon Smart Plug is auto-discovered by Alexa and needs no separate app, but it works with Alexa alone. It lacks the Google Assistant support of the Wyze Plug, the Matter certification of the Kasa Matter Smart Plug KP125M, and the HomeKit and Thread support of the Wemo Smart Plug with Thread. It has no energy monitoring, which the Kasa includes.

Kasa Matter Smart Plug KP125M

Unlike the Wyze Plug, the Kasa Matter Smart Plug KP125M carries Matter certification for cross-ecosystem use, and unlike the Wemo Smart Plug with Thread it is not limited to Apple Home. It has energy monitoring, which the Amazon Smart Plug, the Wemo and the Wyze Plug do not. It connects over 2.4GHz Wi-Fi and has no Thread radio, which the Wemo is built on.

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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