KH Labs/ LLM Bill Checker KH Labs

Free tool · runs in your browser · no sign-up

See where your LLM bill goes, and what to cut first.

Drop a usage export from OpenAI, Anthropic or OpenRouter. You get spend by model and the three changes most likely to lower it, each with a dollar range and the formula behind it.

Drop your usage CSV here

OpenAI usage or cost export · Anthropic Console usage · OpenRouter activity · any CSV with model, input_tokens, output_tokens, requests

Your file never leaves this page. Your browser reads it on your device. The page's security policy blocks every network request (connect-src 'none'), so nothing can be uploaded, and there are no analytics.

No export handy? Try with sample data:

Samples are synthetic: invented token counts, priced at our verified list prices (as of 2026-11-12). Download them: OpenAI · Anthropic · OpenRouter.