Grok offers a Basic plan at $19/month and a Pro plan at $49/month, both limited...

https://super-wiki.win/index.php/Does_Grok_Free_Tier_Include_Memory_and_Projects%3F

Grok offers a Basic plan at $19/month and a Pro plan at $49/month, both limited to about 10 prompts every 2 hours. There’s no free trial on paid plans, so you’ll want to be sure it fits your needs before subscribing