Grok’s paid plans start at $20/month for up to 100 prompts per month, with a...

https://www.hometalk.com/member/262182838/allen1183737

Grok’s paid plans start at $20/month for up to 100 prompts per month, with a cap of about 10 prompts every 2 hours to manage usage. The $50/month plan increases limits but both options don’t offer a free trial