Grok’s paid plans start at $15/month and $50/month for higher usage, with a cap...

https://www.yankee-bookmarkings.win/grok-s-paid-plans-start-at-20-month-for-basic-access-and-50-month-for

Grok’s paid plans start at $15/month and $50/month for higher usage, with a cap of about 10 prompts every 2 hours to keep costs predictable. Note, there’s no free trial available, so you’ll want to be sure before committing to a subscription