AI API Cost Calculator

Estimate your LLM bill from tokens per request and daily volume — pick a model or enter custom prices.

—Cost per day
—Cost per month
—Cost per year
—Cost per request

Model prices change — update the custom fields when providers adjust pricing.

How it works

API billing = input tokens × input price + output tokens × output price, per request. Output tokens usually cost 4–6× input, so trimming response length often cuts bills more than trimming prompts. Multiply the per-request cost by daily volume for the monthly budget line.

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