I'm able to upload one WAV file per speaker, like most of the podcasters I would pressume. Would that make it easier to automate the split and this make the service cheaper?
I need to test this out more thoroughly. Is your speaker audio totally clean when they're not talking?
For all practical reasons I'd say yes, I'm using https://auphonic.com/ which does use machine learning to mute the parts where no human speaks, then they send this audio to third party (like yours) https://auphonic.com/blog/2016/12/02/make-podcasts-searchabl... then they get the files back so auphonic can bundle it for download with the rest.