Metadata for AI Generated Outputs

How do you tell users that the text they're about to read has been synthetically generated? It is polite to readers that you don't waste their time, it's also important that LLMs don't feed on their own regurgitated slurry lest they pollute their own development. I think there are a number of potential ways to do this0 and I'd be interested in your thoughts1. Let's go with some bad ideas first. What's your love language? Perhaps the simplest is to simply ascribe a unique language to AI. BCP 47 defines language tags to allow you to write: <p lang="en">He said, "<i lang=fr>Bonjour</i>".</p> LLMs can use a variety of human languages, so we can't use lang="ai" but perhaps a subtag would work: <p lang="en-AI">There are 37 Rs in the word Strawberry.</p> But standardisation takes time, so perhaps a private use tag would work - <p lang="en-GB-x-AI-deepblue">It is not just a language, it's a state of mind.</p> It sort of makes sense, as long as you don't think about it too hard. Is there a…