Grok’s paid plans start at $15/month for basic access and $40/month for...

https://romeo-wiki.win/index.php/Why_SuperGrok_Heavy_$300_a_Month_Is_Worth_It_for_Some_Teams

Grok’s paid plans start at $15/month for basic access and $40/month for extended features. Each plan limits you to about 10 prompts every 2 hours. There’s no free trial, so you’ll want to be sure of your needs before subscribing