[pliny]

I saw a comment (not in the linked thread) that notes that the system prompt probably includes something along the lines of "You are a helpful AI assistant...", which does feel like a bit of a giveaway in the sense that there are many documents on the internet that discuss testing AI assistants and therefore a document who's topic is an AI assistant is likely to contain discussion of testing the assistant (and if the document is written from a first person perspective, of the assistant, then it's likely to contain text from the perspective of the assistant discussing it's own testing).