Costly

Your AI is Costly. Let's fix that.

One install. 7 detectors. Every wasted dollar, found. Most API dashboards show you what you spent - not why. Costly is an open-source SDK that wraps your AI client, logs every call with zero latency, and runs 7 automated waste detectors: prompt bloat, model overkill, duplicate queries, error waste, and more. Setup with 1 command: npx costly init. Starting with Anthropic, more providers coming soon.