LLMapicalculator estimates what an LLM API call actually costs. Enter model, input and output tokens, and it applies published per-million-token rates including cache pricing and batch discounts. Guides cover Gemini 4 pricing, DeepSeek rates and OpenRouter vs direct billing.
I kept re-checking LLM API prices by opening five pricing pages and doing mental math with a calculator app. So I built one page where you enter tokens and get costs for the models side by side, including per-1M-token rates, batch discounts, and cached input pricing.