Grok’s paid plans start at $15/month for up to 100 prompts every 2 hours, with...

https://victoriasmasterchat.yousher.com/why-did-grok-text-to-speech-jump-from-4-20-to-15-00

Grok’s paid plans start at $15/month for up to 100 prompts every 2 hours, with a $30/month option offering 250 prompts in the same window. Both plans limit you to about 10 prompts per 2 hours to manage usage