Grok’s paid plans start at $20/month and $150/month, each with a limit of about...

https://zulu-wiki.win/index.php/How_Do_I_Audit_My_Integration_for_Old_Grok_Model_IDs%3F

Grok’s paid plans start at $20/month and $150/month, each with a limit of about 10 prompts every 2 hours to manage usage. There’s no free trial available, so you’ll want to be sure it fits your needs before subscribing