I am wondering how that applies to newly generated code.
Odd variable naming? Stylistic choices that are watermarked?
Or as someone else noted further down in the comments, it could be more subtle:
Between the first and second most likely choice, in certain positions it will consistently choose in a certain way.
Personal observation: Opus 5, over the last week, has started outputting A LOT more comments. Despite my global instructions being full of variations on "don't use comments unless absolutely necessary".
I might be imagining things of course. But comments would be great fit for this use case.
> Odd variable naming? Stylistic choices that are watermarked?
Whatever it is, I'm sure it's load-bearing.