Haiku Smart Fans
Haiku L series is made by the Big Ass Fan Company and retails on Amazon for $600 with its Wi-FI module. The wall switch is an extra $100, which will need to be purchased from the manufacturer directly. Not only does it work with Alexa, but it can also sync with your Ecobee or Nest thermostat and will adjust settings and speed based on the current temperature. It even has sleep settings.
The Haiku fan is a bit more complicated than the standard fan you’ll find at a hardware store. Installation is also a bit more complicated. You’ll need to make sure you have a strong Wi-Fi signal, and it may not be compatible with routers provided by your internet service provider.