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

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 with a cap of about 10 prompts every 2 hours. There’s also a $50/month option for higher usage. Note that Grok doesn’t offer a free trial—subscriptions begin with immediate billing