>>724177183
Never. There will always be methods to tell if something that can be visually observed was AI generated. There are AI platforms that exist specifically to tell you if what you are looking at was AI generated or not. Just ask all the retarded students who are flunking out of college right now because they turned in an AI generated paper thinking no one could tell.
I think if anything, audio as evidence is pretty much done for, because under the right circumstances there really is no way to tell if it's genuine or not.