We have implemented Mozilla's DeepSpeech inside the BeeChat program.

DeepSpeech is an offline Speech-to-Text program which allows you to speak into your computer's microphone and the program will transcribe your speech. That way, you can "talk" with other radio devices, but in reality it's only really chat with voice recognition. Instead of sending a large audio file over ZigBee, we send only the information that needs to be sent, that is, the transcribed text.

Due to privacy concerns, instead of using an Internet Connected AI, such as Microsoft's Cortana, or Amazon's Echo, or any other large corporation's implementation, we decided to give complete control to the user.
With BeeChat, we decided computers today are powerful enough to be completely independent and have their own AI engine, removing privacy concerns since there is no Internet.