sorry dude. tried going down the rabbit hole but I'm too lazy and uninterested in it. read about it month ago or so. perhaps Daily News Sentiment Index uses LLMs, not sure. if you go long enough through https://quantocracy.com/ you should be able to find it
found one such index https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5763042 called Populism Index (POP) built from Wall Street Journal articles (not sure how publicly accessible it is)
sorry dude. tried going down the rabbit hole but I'm too lazy and uninterested in it. read about it month ago or so. perhaps Daily News Sentiment Index uses LLMs, not sure. if you go long enough through https://quantocracy.com/ you should be able to find it