AI//COST

AI//COST (https://aicost.tools) is a free price desk for LLM APIs. It tracks 333 models from 34 providers, and every input, output and cached-token rate is checked against the vendor's own pricing page and stamped with the date it was verified.

How to use it: open the LLM API cost calculator on aicost.tools, pick a model, enter your typical input and output tokens per request plus your monthly volume, and you get an estimated monthly bill. Then open one of the 50 head-to-head comparisons to see what the same workload would cost on a cheaper model, or check the price-change tape to see whether a rate moved recently.

There is also a token counter, a subscription break-even calculator, pricing for 12 AI agent tools, and a glossary of 38 cost terms. It is built by an indie founder, self-funded, takes no paid placements, and keeps a public corrections log.