Hey Product Hunt 👋 I built AI Run Rate because I kept seeing the same story play out in AI engineering communities: teams pick a model, build the agent, ship it — then get surprised by a $4,000 API bill at the end of the month. The cost math isn't hard. But nobody does it upfront because there was no lightweight tool to do it in. So I built one. How it works: → Add your workflow steps (classify intent, search, summarize, respond — whatever your agent does) → Pick a model per step from the main providers (OpenAI, Anthropic, Google) → Enter rough input/output token estimates → Get average cost per run, p95 worst case, and monthly projection at your volume → Swap models and watch the numbers change instantly → Share the result as a URL — no signup required The shareable link was important to me. The whole point is to put a cost projection in front of a co-founder, a finance stakeholder, or a client before committing to an architecture. That needs to be frictionless. Would love brutal feedback — especially if the numbers feel wrong when you plug in your own workflow. That's the most useful thing you can tell me right now. Try it: https://airunrate.com

AI Run Rate

Know your AI agent costs before you build

Know your AI agent costs before you build