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

https://sticky-wiki.win/index.php/What_Are_the_Grok_4_Heavy_Benchmark_Scores_Mentioned_for_Heavy%3F

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