I pull messy data from a remote source (think OCR-ed invoices for example), and need to clean it up. Every day I get around 1k new rows. The way in which it's messed up changes frequently, and while I don't care about it being 100% correct, any piece of code (relying on rules, regex, heuristics and other such stuff) would break in a couple of weeks. This means I need at least a part time developer on my team, costing me a couple of thousands per month.

Or I can pass each row through an LLM and get structured clean output out for a couple of dollars per month. Sure, it doesn't work 100%, but I don't need that, and neither could the human-written code do it.

Effectively, LLM resulted in one less develper hired on our team.