What tools to use to recognize text from an audio file in Javascript?

Question

JavaScript

My goal is to convert an audio file with a message in Russian into text in Russian using client-side JavaScript or a free Web API.
Things I found: Webkit Speech API , Google Cloud Speech , Yandex SpeechKit , pocketsphinx.js , watson-speech , none of them suited me:
Webkit Speech API only works with a microphone.
Google Cloud Speech and Yandex SpeechKit are asking for money.
pocketsphinx.js and watson-speech do not support Russian.
Actually a question for connoisseurs, where can I find a library / Web API suitable for my request?
If there is no tool suitable for my request, are there analogues of Google Cloud Speech / Yandex SpeechKit that I could deploy on my server and use as a Web API?

Answer 1

https://github.com/sdkcarlos/artyom.js/