The creator/main developer is a friend of mine and is one of the smartest people I know. The project can be used to control IDA for reverse engineering, play video games, program, and more.
The difference between this and Talon, is Talon can be used for real programming and uses very low latency offline recognition, while voice coder looks like a guided tutorial and the user experience is probably a fairly high latency single command call/response based on my previous Alexa experience. I'm not sure Alexa can recognize a streaming series of commands without large recognition pauses between each command.
How is its accuracy for daily use? How about random navigation within a file, for example.
Does it have an active community?