AI API Cost Calculator: Estimate Your Monthly LLM Bill

AI API Cost Calculator

Estimate your monthly LLM API spend. Enter your workload below and compare costs across models. Prices verified October 2026 — always re-check the provider's pricing page before budgeting.

Your cost per model

Prices per 1M tokens, verified Oct 2026. GPT-5.6 Sol promo: "available at least through Nov 21, 2026" (OpenAI). Argon intro through Nov 30, 2026, then $4/$20 from Dec 1. "Post-promo" Sol uses the pre-promo $5/$30 list price as the only concrete scenario — not a prediction. Models without published cache rates bill cached tokens at the input rate here. This is an estimate, not a quote.


 

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