Grok’s paid plans start at $20/month with a cap of 10 prompts every 2 hours....

https://golf-wiki.win/index.php/Cheapest_Way_to_Test_Grok_for_a_Month:_Is_It_Just_$30%3F

Grok’s paid plans start at $20/month with a cap of 10 prompts every 2 hours. The Pro plan is $50/month, offering increased limits. Note that Grok does not offer a free trial, so you’ll want to be sure before committing