> I spent an entire afternoon writing string-matching heuristics, regular expressions, and even implementing Levenshtein distance to answer the simple question, "is this address the same as that one?"

> But then, on a lark, I replaced all that code – 50+ lines in all – with a single call to GPT. And within ten minutes and just a few lines of code, I hit 100% accuracy against my test suite!

They could write an extra layer or two to preprocess and match obvious easy ones, and also to sanity-check the LLM's output for hard ones.

The cases are mostly string matching and string patterning. I can't see the debug cases as wildly varying.

OP - You can also, as a double blind, use Google maps api calls which will return you a fully fledged address.