Why per-app logging can't explain your AI spend, and what actually fixes it Most teams find out their LLM costs are a problem the same way: the invoice shows up, it's bigger than expected, and nobody can say exactly why. Not because the spend is random. Because nobody is watching the layer where the spend actually happens. Here's the thing that trips people up. LLM cost tracking usually lives inside each application: one service, one API key, one line item. That works fine when you have o...