As of September 2026, Grok offers two ways to subscribe: directly at grok.com...

https://astro-wiki.win/index.php/Does_Grok-4-Fast_Still_Work_and_What_Does_It_Cost_Now%3F

As of September 2026, Grok offers two ways to subscribe: directly at grok.com or through X. There’s no paid-plan trial available. The free plan limits you to about 10 prompts every 2 hours. Monthly pricing on grok