In my own vibe coded implementation during the recordings the live transcript gets sent for validation and allows me to take better decision while in the call itself.I'm using a a small local model for processing.Also like when it detects bullshit told by others in real times so I can immediately reply.Fun
There are a number of free apps that do this now: ghostwhisper and anarlog are the first two that come to mind. It is not hard to vibe your own too. There are open source models that do diarization.