Most teams running AI APIs don't know which project is eating their budget until the invoice lands. This workbook fixes that — no logging pipeline, no code changes needed. Track spend by model and project, get instant cost rollups via VLOOKUP against 19 pre-priced models (GPT-4o, Claude Sonnet, Gemini, Mistral — July 2026 pricing), and watch your MTD dashboard auto-flag when any project hits 80% of budget. Built for solo devs and small teams. Instant download — XLSX + PDF guide + README.
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Maker
📌
Built this after realizing I had no idea which of my 4 side projects was eating most of my OpenAI budget. The invoice would land and I'd have to manually cross-reference timestamps in the API logs — every single month.
The workbook gives you a Usage Log where you paste token counts, a Pricing Reference tab with 19 models pre-priced (July 2026), and a Dashboard that rolls everything up by project with 80% budget alerts. No pipeline, no code changes — just a spreadsheet you can actually use today.
Happy to answer questions about how the VLOOKUP auto-cost formula works or the budget alert logic!