I’ve seen the FUTO one before and it seems like it works quite well.
As far as the model being on Murena servers, Gaël already mentioned that it isn’t, albeit indirectly.
He also mentions earlier in the post that Murena is using some cool trickery to make the process of rerouting faster. Murena’s STT server is nothing more than a proxy that anonymizes some data before forwarding it to OpenAI.