Free AI cost tools
No signup and nothing uploaded: every tool runs in your browser.
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FOCUS Checker
Drop a billing CSV to see what stops it conforming to FOCUS 1.2, 1.3 or 1.4, or convert Anthropic, OpenAI and Together AI exports into a FOCUS 1.4 CSV. Also an open-source CLI: npx ai-bill-to-focus.
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AI Spend Calculator
Pick a model, enter your call volume and token sizes, and see monthly cost, cheaper alternatives, and what prompt caching and batching would save.
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Agent Loop Cost Calculator
Model how much a stuck agent burns before it hits its iteration cap, with context that grows every step, against a normal run.
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