Burnmap tracks cost at the run level — not per API call, but per agent session. One line of code, no proxy, no latency, and a hard-stop that kills runaway loops before they hit your card.
3-minute setup. pip install burnmap. Lock in $23.40/mo for life.
// the problem
One monthly charge from Anthropic or OpenAI. No breakdown. No attribution. No alerts. Just a number that keeps growing with no way to know which run caused it.
"had no idea it would be this much"
"I lost $4,200 in one weekend to an agent loop I didn't know was running"
"Cursor gave me a $350 bill in a week. Zero alerts. Zero visibility."
"I had to write my own script just to understand the costs"
// how it works
Tag any block of code as a run. Every LLM call inside gets grouped, attributed, and counted. You see the full cost of that session — not thousands of individual calls.
// architecture
Your LLM calls go directly to the provider — always. Burnmap intercepts metadata asynchronously, off the critical path. If Burnmap goes down, your app keeps running.
// features
Built for solo developers who want to understand their costs and stop runaway runs. No configuration, no dashboards to babysit, no noise.
BudgetExceededError and stops making calls. The $4,200 weekend is literally impossible.// pricing
Flat rate. No per-request fees. No seat fees on Indie. Pay for the tool, not for using it.
Free while in beta. All plans include the full feature set.
// join the waitlist
Free tier forever. Lock in $23.40/mo for life if you upgrade within 30 days of launch. 3-minute setup.