Use a stepwise decision path to diagnose whether cost comes from model choice, prompt structure, output length, or delivery mode.
The alert A support assistant that usually costs $400 a week is on pace for more than triple that spend before month-end. If you debug in the wrong order, you will spend time changing models while the real leak keeps running. Cost triage order Output -> cache -> route -> batch Start with the most direct cost drivers before you debate architecture elegance. Model swap first Visible, but often premature The team fixes the biggest leak first instead of the loudest one. Cost triage follows where money actually accumulates: token class, prompt reuse, model tier, then delivery lane. 01 First…
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