What repeated LLM calls actually cost you
· 7 min read
The bill arrives and it is bigger than last month. Everyone agrees usage is up, someone says the word "caching", and the conversation moves on because nobody knows how much of the spend is actually repeat work.
That number is worth having, and it is easier to get than it sounds. This post is about measuring your own repeat rate first, then deciding whether caching is worth doing at all.