I’d like to better understand the minimum text length to get a confident result, i would presume it would need to be quite long, perhaps > 1000 words to get an accurate result.
a lot of side-channel information can be hidden in text, see https://arxiv.org/html/2510.20075v6 where they hide as much text as the source text itself
From what I’ve read its closer to 100-300 words. And maybe 500 words to include info identifying the prompter.