If you can code or know how to use some demos, you can give a try to Vosk, this is a opensource project with multiple implementations and language models, opens

If you can code or know how to use some demos, you can give a try to Vosk, this is a opensource project with multiple implementations and language models, opensource as well, all of this offline. They have smalls and big models, for mobile apps, iot, asterisk, and much more https://alphacephei.com/vosk/ https://alphacephei.com/vosk/