Quite honestly, I'd imagine getting LLMs to generate regex solutions seems most feasible. Regex can basically run through a character vector full of millions in

Quite honestly, I'd imagine getting LLMs to generate regex solutions seems most feasible. Regex can basically run through a character vector full of millions in impressive time. Plugging all of them into an LLM and awaiting a response taking 20 seconds each might be impractical for most use cases. However, asking an LLM to pack the regex statement full of synonyms and | operators just might seem a better solution. Especially if you can give the LLM some samples of what you're looking for.