Our AI bill jumped from $200 to $800 in one week. Nobody knew why. (i will not promote)

Three months ago I was running a small engineering team. We were building fast, shipping features, using OpenAI everywhere. Then one week our bill jumped 4x. We spent two days trying to figure out what happened. Was it the chatbot? The summarization feature? A bug causing infinite retries? We genuinely didn't know. We had one API key. One bill. Zero visibility. I looked for tools to fix this. Everything I found was either too complex, too expensive, or just analytics with no actual control. So I built TOLVY