To cancel Grok, make sure you do it through the same channel you subscribed...

https://source-wiki.win/index.php/I_got_a_big_xAI_charge_%E2%80%93_how_do_I_tell_if_it_was_API_or_SuperGrok_Heavy%3F

To cancel Grok, make sure you do it through the same channel you subscribed with—whether that’s grok.com (Stripe), Apple Subscriptions, Google Play, X Premium on x.com, or the console.x.ai portals for Business and API billing