I use Apple dictation heavily for transcribing interviews. I've tried all the voice-to-text services out there and none have been reliable enough *at transcribing an audio file. I've settled on playing audio in my headphones and pausing while I carefully dictate text into a document. If I could upload the audio file, get a first-pass transcription, and then go through and edit / make corrections with voice, that would be awesome.

A difference in error rate from 20-something percent down to less than 5 percent sounds incredible.