secretsilver

I don't think they are using any invisible Unicode or metadata stuff.

What happens is that AI selects similar words based on a random process.

Something like "The company had a large/big/substantial advantage".

It chooses between these words, and over a longer piece of text, the pattern will start showing, like a "choice A → choice C → choice C → choice B → choice A".

The normal-looking text will actually be a fingerprint living in the form of statistics.

I think Claude will be sharing these patterns to third parties for AI detection.