Using Vectorize to build an unreasonably good search engine in 160 lines of code

Only indirectly. A lot of popular models used for generating vectors are nowhere near as smart as LLMs. Also, the vectors themselves are not machine learning models. They are just lists of numbers intended for comparing to other lists of numbers. Typically using some similarity algorithm like cosine similarity.

Vector search embeddings are only as good as the models you use, the content you have, and the questions you ask.

This is a bit of a pitfall when you use them for search. Especially if you have mobile users because most of them are not going to thumb in full sentences in a search box. I.e. the questions the ask are going to be a few letters or words at best and not have a lot of context. And users will still expect good results. Vector search is not great for those type of use cases because there just isn't a whole lot of semantics in these short queries. Sometimes, all you need is just a simple prefix search.

'brain' will suffice here.

I think the website itself has that product. But why would it be enabled on their blog... I don't know.

I bet there were a few people who said something like that the first time someone made music