Non-Tesla drivers can either pay per charge or get a discounted rate with a monthly membership.
https://www.cnet.com/roadshow/news/select-tesla-supercharger-stations-in-us-now-open-to-non-tesla-evs/?utm_source=dlvr.it&utm_medium=blogger#ftag=CAD590a51e
https://www.cnet.com/roadshow/news/select-tesla-supercharger-stations-in-us-now-open-to-non-tesla-evs/?utm_source=dlvr.it&utm_medium=blogger#ftag=CAD590a51e