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ESPHome vs TP-Link Kasa

ESPHome logo

ESPHome

Smart Home

Custom firmware for ESP8266/ESP32 smart home devices

From
Free
Rated
-
Full reviewWebsite
TP-Link Kasa logo

TP-Link Kasa

Smart Home

Affordable smart home devices with easy setup

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ESPHome eSPHome runs only on supported microcontrollers; the project recommends ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 and advises against ESP8266 for new projects; TP-Link Kasa plus plan only covers one camera per subscription
  • They diverge on capability: ESPHome covers YAML Configuration, TP-Link Kasa covers Affordable.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which ESPHome and TP-Link Kasa actually diverge.

Attributes where ESPHome and TP-Link Kasa differ
AttributeESPHomeTP-Link Kasa
Pricing modelopen-sourcefreemium
PlatformsESP8266, ESP32, Docker, Raspberry PiIOS, Android, Web
Founded20181996

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Smart Home).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ESPHome

  • YAML Configuration
  • OTA Updates
  • Home Assistant Native
  • Custom Components
  • Home Assistant
  • MQTT
  • API
  • Native integration

Only in TP-Link Kasa

  • Affordable
  • No Hub Required
  • Energy Monitoring
  • Scheduling
  • Alexa
  • Google Home
  • SmartThings
  • IFTTT

What people use each for

The jobs each tool is most often brought in to do.

ESPHome

  • Building custom smart home sensors and switches on ESP32 hardwarenot TP-Link Kasa
  • Replacing vendor cloud firmware on ESP based devices with locally controlled firmwarenot TP-Link Kasa
  • Integrating DIY devices into Home Assistant over a native API or MQTTnot TP-Link Kasa

TP-Link Kasa

  • Home security camera recording and playbacknot ESPHome
  • Smart home automation monitoringnot ESPHome
  • Pet and baby monitoringnot ESPHome
  • Outdoor property surveillancenot ESPHome

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ESPHome

  • ESPHome runs only on supported microcontrollers; the project recommends ESP32, ESP32-S3, ESP32-C3 and ESP32-C6 and advises against ESP8266 for new projects
  • Support for ESP32-H2, RP2040 and other newer chips is documented as less mature
  • Large displays and some sensors do not work well on ESP8266 because of its limited RAM, which is roughly a fifth of an ESP32

TP-Link Kasa

  • Plus plan only covers one camera per subscription
  • No free trial mentioned for paid tiers
  • Premium plan requires annual commitment discount to reach $100/year pricing
  • Video retention limited to 30 days even on paid plans

Pricing, plan by plan

ESPHome

Free
  • CommunityFree
    • Full firmware
    • Home Assistant integration
    • Custom sensors

TP-Link Kasa

Free
  • Free TierFree
    • Live streaming
    • Push-to-talk
    • Activity zones
  • Plus$3/month
    • 30 days of video history
    • Manual clip recording
    • Video sharing
  • Premium$10/month
    • Covers up to 10 cameras
    • All Plus features
    • Snapshots with alerts

Which should you pick?

Choose ESPHome if

  • You need yaml configuration.
  • You want to start without paying.
  • You work on ESP8266, ESP32, Docker, Raspberry Pi.
  • You also want ota updates.
ESPHome review

Choose TP-Link Kasa if

  • You need affordable.
  • You want to start without paying.
  • You work on IOS, Android, Web.
  • You also want no hub required.
TP-Link Kasa review

Questions people ask

Is ESPHome or TP-Link Kasa better?
Neither clearly leads. ESPHome starts at Free and TP-Link Kasa at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESPHome or TP-Link Kasa?
ESPHome starts at Free and TP-Link Kasa at Free.
Does ESPHome or TP-Link Kasa run on more platforms?
ESPHome runs on ESP8266, ESP32, Docker, Raspberry Pi. TP-Link Kasa runs on IOS, Android, Web.
Can I use ESPHome for free?
Both have a free tier, so you can try either at no cost before committing.
What is ESPHome best used for?
ESPHome is most often used for building custom smart home sensors and switches on esp32 hardware, replacing vendor cloud firmware on esp based devices with locally controlled firmware, integrating diy devices into home assistant over a native api or mqtt. Of those, building custom smart home sensors and switches on esp32 hardware and replacing vendor cloud firmware on esp based devices with locally controlled firmware are not what TP-Link Kasa is typically brought in for.
What can ESPHome do that TP-Link Kasa cannot?
ESPHome covers YAML Configuration, OTA Updates, Home Assistant Native, Custom Components. TP-Link Kasa covers Affordable, No Hub Required, Energy Monitoring, Scheduling.

Answered from the vendors’ own pages

ESPHome: Is ESPHome free to use?

Yes. ESPHome is free and open-source software. The Desktop App, Device Builder, components, and recipe tools are all available at no cost.

Source
TP-Link Kasa: Does Kasa Care offer a free plan?

Yes, Kasa's free tier includes live streaming, push-to-talk, activity zones, and activity notifications at no cost.

Source
ESPHome: What is the cost to run ESPHome?

ESPHome software itself is completely free. Hardware devices and components used with ESPHome vary in cost depending on which microcontrollers and IoT devices you choose.

Source
TP-Link Kasa: What's the difference between Kasa Plus and Premium?

Plus costs $3/month and provides 30 days of video history per camera. Premium costs $10/month and covers up to 10 cameras with all Plus features. Premium is billed at $100/year vs Plus at $30/year per camera.

Source
ESPHome: Does ESPHome require a subscription or license fee?

No. ESPHome is open-source software with no subscription fees, license costs, or commercial restrictions associated with its use.

Source
TP-Link Kasa: Can Premium cover all my cameras?

Yes, Kasa Premium covers up to 10 cameras under one $10/month subscription, making it more economical than Plus for multiple devices.

Source
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