Grok’s paid plans start at $20/month for basic access and $50/month for premium...

https://seo.edu.rs/blog/why-supergrok-heavy-300-a-month-is-worth-it-for-some-teams-11220

Grok’s paid plans start at $20/month for basic access and $50/month for premium features, with usage capped at about 10 prompts every 2 hours. Note, there’s no free trial, so you’ll want to be sure it fits before committing