As of September 2026, Grok offers two purchasing options: directly at grok.com...

https://direct-wiki.win/index.php/How_to_Audit_My_Code_for_Old_Grok_Model_Aliases:_Avoid_Silent_Redirects_and_Optimize_Your_AI_Spend

As of September 2026, Grok offers two purchasing options: directly at grok.com or via platform X. There’s no paid-plan trial available. The free tier limits users to about 10 prompts every 2 hours