How I Found $1,240/Month in Wasted LLM API Costs...

I was spending about $2,000/month on OpenAI and Anthropic APIs across a few projects. I knew some of it was wasteful. I just couldn't prove it. The provider dashboards show you one number — your total bill. That's like getting an electricity bill with no breakdown. Is it the AC? The lights? The server room? No idea. So I built a tool to find out. What it discovered was honestly embarrassing. What I found 34% of my summarizer calls were retries. The prompt asked for JSON, but the model kept wrapp