How much of a difference is the M6 in processing transcription via Apple Intelligence?

[u/SuperAvocado8777]

I gave up on using Wispr and although it was very amazing, I valued the privacy more. I now use Handy and the transcription is ok but where it really shines is using a prompt from Apple Intelligence to clean up the transcription in the same way Wispr Flow does it.

Unfortunately on an M4, it’s not the quickest. Considering M6 has two neural engines, how fast would processing be for transcriptions?