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Smart Home · head to head

MQTT vs Tasmota

MQTT logo

MQTT

Smart Home

Lightweight messaging protocol for IoT devices

From
Free
Rated
-
Full reviewWebsite
Tasmota logo

Tasmota

Smart Home

Open-source firmware for ESP8266/ESP32 based devices

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: MQTT mQTT is an open-source protocol standard with no commercial pricing; not a commercial product; Tasmota tasmota only runs on Espressif ESP8266, ESP8285, ESP32, ESP32-S and ESP32-C3 chipsets, so devices built on other silicon cannot use it
  • They diverge on capability: MQTT covers Publish-Subscribe, Tasmota covers Local Control.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which MQTT and Tasmota actually diverge.

Attributes where MQTT and Tasmota differ
AttributeMQTTTasmota
PlatformsAny platform, Embedded devices, Cloud, Edge computingESP8266, ESP32, Compatible devices
Founded19992017

Identical on both: starting price (Free), pricing model (open-source), 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 MQTT

  • Publish-Subscribe
  • Lightweight
  • QoS Levels
  • Retained Messages
  • IoT platforms
  • Home automation
  • Cloud services
  • Edge devices

Only in Tasmota

  • Local Control
  • MQTT Support
  • Web Interface
  • OTA Updates
  • Home Assistant
  • Domoticz
  • OpenHAB
  • Node-RED

What people use each for

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

MQTT

  • IoT messagingnot Tasmota
  • Sensor datanot Tasmota
  • Real-time updatesnot Tasmota
  • Device telemetrynot Tasmota

Tasmota

  • Replacing vendor cloud firmware on ESP based smart plugs and switchesnot MQTT
  • Controlling smart home devices locally over MQTT or HTTPnot MQTT
  • Integrating off the shelf Wi-Fi devices with Home Assistant without a cloud accountnot MQTT

Where each one falls short

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

MQTT

  • MQTT is an open-source protocol standard with no commercial pricing; not a commercial product

Tasmota

  • Tasmota only runs on Espressif ESP8266, ESP8285, ESP32, ESP32-S and ESP32-C3 chipsets, so devices built on other silicon cannot use it
  • Initial installation requires opening the device, bridging GPIO0 to ground during boot and using a 3.3V serial programmer; a 5V programmer damages the chip
  • The ESP chip needs at least 150mA at 3.3V, so an underpowered supply causes flashing and stability failures
  • The Wi-Fi setup access point stays active for only 3 minutes, after which the device must be power cycled to try again
  • The Power Cycle Recovery feature can reset a device to firmware defaults where mains power fluctuates, and the docs advise disabling it in that case

Pricing, plan by plan

MQTT

Free
  • Open ProtocolFree
    • Publish-subscribe
    • Lightweight
    • QoS levels

Tasmota

Free
  • CommunityFree
    • Full firmware
    • MQTT
    • Web UI

Which should you pick?

Choose MQTT if

  • You need publish-subscribe.
  • You want to start without paying.
  • You work on Any platform, Embedded devices, Cloud, Edge computing.
  • You also want lightweight.
MQTT review

Choose Tasmota if

  • You need local control.
  • You want to start without paying.
  • You work on ESP8266, ESP32, Compatible devices.
  • You also want mqtt support.
Tasmota review

Questions people ask

Is MQTT or Tasmota better?
Neither clearly leads. MQTT starts at Free and Tasmota at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, MQTT or Tasmota?
MQTT starts at Free and Tasmota at Free.
Does MQTT or Tasmota run on more platforms?
MQTT runs on Any platform, Embedded devices, Cloud, Edge computing. Tasmota runs on ESP8266, ESP32, Compatible devices.
Can I use MQTT for free?
Both have a free tier, so you can try either at no cost before committing.
What is MQTT best used for?
MQTT is most often used for iot messaging, sensor data, real-time updates, device telemetry. Of those, iot messaging and sensor data are not what Tasmota is typically brought in for.
What can MQTT do that Tasmota cannot?
MQTT covers Publish-Subscribe, Lightweight, QoS Levels, Retained Messages. Tasmota covers Local Control, MQTT Support, Web Interface, OTA Updates.

Answered from the vendors’ own pages

MQTT: Does MQTT have a commercial license cost?

MQTT is an open-source communication protocol and standard. No pricing is published because MQTT itself is not a commercial product for sale.

Source
Tasmota: What is the cost of Tasmota?

Tasmota is completely free as open-source firmware for ESP devices. Source code is available on GitHub, and the project accepts donations for continued development.

Source
Tasmota: Can Tasmota be modified and redistributed?

Yes, Tasmota is open-source software allowing users to access, compile, modify, and redistribute builds according to the project LICENSE.

Source
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