Hi @Marco , Thanks for using Microsoft Q&A Platform.
There are no additional costs associated with using Machine Learning service under a Pay-as-you-go subscription. But, for creating a compute instance it charges since it run on Azure infrastructure. If you have any doubts, always use the Azure pricing calculator to get an estimate of the costs before you create anything.
Please visit here to know more information on Machine Learning pricing and cost management.
I hope this helps.
Regards, Vasavi
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