Silvius isn't really state of the art. It's just newish. On their website it even says the project that inspired them has better performance. It references Aenea (which is a convoluted system of using Dragon on Linux in a VM) and calls out to Tavis Rudd's 5-year-old presentation and Dragonfly, none of which are state of the art.
Silvius is unique in being the only project I know of to use Kaldi, which is very cool because it's open-source and doesn't require a GPU, but the recognition accuracy of Silvius isn't great and the voice model is fixed and has no feedback from the grammar.
Silvius is unique in being the only project I know of to use Kaldi, which is very cool because it's open-source and doesn't require a GPU, but the recognition accuracy of Silvius isn't great and the voice model is fixed and has no feedback from the grammar.