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

https://lanesniceblog.scriblorax.com/posts/realtime-voice-pricing-0.05-per-minute-on-xai-api-explained

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