AI API Pricing Calculator

Estimate OpenAI, Claude and Gemini API costs from requests, input tokens and output tokens. Compare rates or enter your own.

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Usage and rates

Enter average tokens per request. All rates are in US dollars per million tokens.

Rate preset

Requests

Input tokens per request

Output tokens per request

USD per million input tokens

USD per million output tokens

See the total and the input and output breakdown.

Multiply input and output tokens by their respective rates and request count. Compare models by changing the preset while keeping usage constant.

At $1 input and $4 output per million tokens, 1,000 requests with 1,500 input and 500 output tokens cost $3.50.

Preset rates checked Nov 10, 2026. Estimates cover standard text tokens. Cache, batch, tools and taxes may change the actual bill.