Grok’s paid plans start at $15/month for up to 100 prompts every 2 hours, with...

https://front-wiki.win/index.php/Does_Grok_Free_Tier_Work_as_a_Real_Workday_Tool_or_Just_a_Demo%3F

Grok’s paid plans start at $15/month for up to 100 prompts every 2 hours, with a $30/month option offering 250 prompts in the same window. Both plans limit you to about 10 prompts per 2 hours to manage usage