Not really in the field of trading, rather prediction-based approaches etc.; Im not sure if LLM could be of any use here? The approaches based on statistical arbitrage are purely math/number models. from my own experience, LLM are absolutely useless when it comes to "trading ideas" (I use them for code generation, instead), this is because they are dicing together values in their output which are not really related, because of their hallucis.
Also, for fundamental analysis they are too often incorrect - so running an auto-approach based on LLM-fundamental output would be an "interesting" idea :))
Im sure, there are ton of other options by applying whatever "mega-tech", but if the result is only slightly better while having much more costs (and complexity!), for me its not worth (as i'm not a company, but an individual invstor)
Your project sounds ready cool though. If you ever feel like collaborating, give me a shout at drknyt05@gmail.com.
What most people dont get: This is not about "predicting" where the price will be, this is about taking momentum and weeding out the bad options - and applied on a large set of stocks, there is always something you can ride with for a couple of days (with applied leverage, there is usually a substantial profit)