Embed
Put the API cost calculator on your site.
The widget is a small page in an iframe. It shows a monthly cost, and it links back to CountMyToken.
<iframe src="https://countmytoken.com/embed/calculator/" title="CountMyToken calculator" style="width:100%;max-width:480px;height:720px;border:0;border-radius:16px"></iframe>
The iframe loads https://countmytoken.com/embed/calculator/. You can add a query such as ?models=gpt-6-luna&in=1000&out=400&req=50&per=day if you want it to open on a particular workload.