Grok offers a Basic plan at $15/month allowing up to 10 prompts every 2 hours,...

https://angelossplendidperspectives.lowescouponn.com/what-do-you-get-with-supergrok-at-30-a-month

Grok offers a Basic plan at $15/month allowing up to 10 prompts every 2 hours, and a Pro plan at $40/month with the same prompt cap but faster response times. Both paid plans do not include a free trial