Grok’s paid plans start at $20/month for basic access and $50/month for premium...

https://wiki-fusion.win/index.php/Does_X_Premium_Include_Companions_Memory_and_Projects%3F_A_Deep_Dive_into_XAI,_Grok,_and_SuperGrok_Lite

Grok’s paid plans start at $20/month for basic access and $50/month for premium features, with usage capped at about 10 prompts every 2 hours. Note, there’s no free trial, so you’ll want to be sure it fits before committing