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AI Economics, Cached input
90% off

Input tokens served from the prompt cache cost 90% less than fresh ones, at the median.

Cached-input price ÷ list input price, per model and host that publish both. One minus the median.

Source: OpenRouter, LiteLLM price map. Based on 2,420 data points.

Quality data: LMArena (CC BY 4.0), Epoch AI (CC BY 4.0). Prices: OpenRouter, LiteLLM (MIT), provider pages. List prices in US dollars before discounts and taxes; other currencies converted at the European Central Bank reference rate. The figures on these pages are free to reuse under CC BY 4.0 with a link to this page.