Ask HN: Where can I find the latest info for essay ranking, spam filtering?

I used to do a lot of work with spam filtering. I once worked at a company that had set up hundreds of marketing websites, all of which were the start of a sales funnel that fed into Marketo and then into LeadSpace and then in Salesforce. A good response from potential customers looked like this:

"I am interested in the pricing for MaxaMegaAI. Do you have a free tier for a startup with less than 10 developers?"

or:

"Can your ETL tool handle different systems for geospatial calculations?"

Bad responses looked like:

"None"

or:

"Damn"

Or:

"sdefedflkjlkjsdfsdlkfjlskdfj"

I wrote simply machine learning scripts to automate some of our spam filtering.

I have the impression this has come a long way?

I think this category of machine learning is sometimes called "essay ranking."

I've been away from this kind of work for 7 years. I assume nowadays, with LLMs, there might be some advanced techniques that can be easily implemented?

Can someone point me towards a good resource?