Try Nuance Dragon options (no affiliation, just a good tool). They have software that works offline, without cloud. They have a very competitive voice recogniti

Try Nuance Dragon options (no affiliation, just a good tool). They have software that works offline, without cloud. They have a very competitive voice recognition quality for the supported languages. There are some products that are explicitly cloud-based (like mobile ones), but there are also desktop versions that do all the processing, inferring and even learning of your voice and new dictionaries on your local machine. You will need a somewhat powerful PC, but nothing crazy. (PS but to be fair, it's a dictation tool with some extra commands, even if a very good one. It is not really a voice assistant. But I'm not sure if that is harder or easier to do. There are open-source offline assistant tools too that work quite well already, because once you have a set of pre-determined phrases/formulas, they are much easier to parse.)