LLM API Cost Calculator
Estimate API Cost
Calculate total cost for your LLM API usage
tokens
tokens
Compare Providers
Compare costs across different LLM providers for same usage
tokens
tokens
Formula
Total Cost = (Input Tokens / 1,000,000) × Input Price + (Output Tokens / 1,000,000) × Output Price
Frequently Asked Questions
How are LLM API tokens calculated?
Tokens are roughly 4 characters of text. OpenAI estimates ~100 tokens per 75 words. Different providers may tokenize differently, so check their documentation for accuracy.
What's the difference between input and output tokens?
Input tokens are the prompt you send to the API. Output tokens are the response generated by the model. Output tokens typically cost 2-5x more than input tokens.
Are there volume discounts for high usage?
Yes, most providers offer volume discounts. OpenAI has tiered pricing for high-volume users. Contact the provider's enterprise sales team for custom rates.
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