What kind of AI does StoryGraph use?

I stopped using Goodreads at the end of 2024 because I decided that I was done with Amazon. I wanted to switch to StoryGraph, but I knew that StoryGraph uses AI; I’m totally against AI language learning models (LLMs) like ChatGPT, so StoryGraph was an immediate no for me.

I’ve been thinking about it again, and I know that because AI is a buzzword, many businesses have been calling their algorithms “AI” now. Yes, by the most technical sense, algorithms are AI, but also when you think AI, you think of a LLM like ChatGPT. Basically it’s become hard to decipher whether companies are actually using the LLMs that I’m against or if they’re just using AI as a buzzword.

So, my question is: does anyone know what type of AI StoryGraph uses? Is it a language learning model, or is it just an algorithm?