Home › Free Tools › Bill X-ray: LLM Usage CSV Analyzer
Free toolBill X-ray: LLM Usage CSV Analyzer
Drop in a usage export from OpenAI, Anthropic or your gateway. In seconds you'll see where the money goes and the first things to fix, and nothing leaves your browser.
Your file never leaves your browser. Columns are matched by name: model, input or prompt tokens, output or completion tokens, cached tokens, and cost or amount.
Where to get the export
See how to export OpenAI usage data or Anthropic usage data.
What it checks
- Spend by model.
- Your cached share of input.
- Output tokens against input.
- Whether one model dominates spend.
Frequently asked questions
Is my usage data uploaded anywhere?
No. The Bill X-ray runs in your browser; the file is never sent to a server.
Which CSV formats work?
Any CSV with a model column and token or cost columns. Headers are matched by name, such as input_tokens, output_tokens, cached and cost.
Want us to find your 20%?
Book a free 15-minute API cost teardown. Bring last month's provider usage and we'll show you your biggest waste and the first fix we'd ship.
Get a Free 15-Minute API Cost Teardown