As of September 2026, Grok offers two purchase routes: directly via Grok.com...

https://bizzmarkblog.com/how-to-audit-my-code-for-old-grok-model-aliases/

As of September 2026, Grok offers two purchase routes: directly via Grok.com and through the X platform. There’s no paid-plan trial available. The free tier limits you to about 10 prompts every two hours. Monthly pricing on Grok