Entreprise Cloud is not free but you can try it. You can ask for a 60 days trial period here.
About the limits for cloud computer vision, they are related to the amount of data that can be processed every minute:
Community plan, the limit is 30 Mp/min, roughly equivalent to 15 fullHD images/min
Enterprise plan, the limit is 240 Mp/min, roughly equivalent to 120 fullHD images/min
This is confusing me can someone help me out please I am using an on-site installation of orchestrator (enterprise) and need to use computer vision. Where exactly do I get the api key?