Grok’s paid plans start at $20/month for up to 100 prompts per month, with a...

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 for up to 100 prompts per month, with a cap of about 10 prompts every 2 hours to manage usage. The $50/month plan increases limits but both options don’t offer a free trial