AI API Cost & Budget Tracker

What it does

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.

You're building with AI. You're calling GPT-4o, Claude, Gemini — and somewhere around month two, you realize you have no idea which project is burning through your API budget or which model is costing you the most.Most teams track API costs by squinting at a provider dashboard, exporting a CSV, and doing math in their head. That doesn't scale past one project or one person.This workbook fixes that

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