A quick question, what accent do you have? As an Aussie I have real trouble speaking naturally with most speech to text software, open or closed source. I feel like the guys in that Scottish sketch show in the voice activated elevator. I sometimes use voice dictation for my notes for work and I spend almost as much time correcting as I do speaking.

That said, I have found a perfect solution. I can get well over the 95% correct mark by simply using an English or American accent. I can do both fairly well and the speech to text has no complaints. I imagine someone from Boston would have a tonne of trouble being understood, as would a Welsh person, but pretending to be a Californian or similar can help immensely.

I would love to find something that can be trained by my speech like Dragon Naturally Speaking used to be. I used that in the early 2000s and at first it was awful, but training it for a few hours really did offer a noticeable improvement, and ongoing use continued to improve further. My computer died and I lost all the trained data, so I never went back, but if I could I would definitely do that again.