Grok's paid plans start at $24 per user/month, offering up to 10 prompts every...

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

Grok's paid plans start at $24 per user/month, offering up to 10 prompts every 2 hours. At $48 per user/month, you get additional features but the same prompt cap