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

https://harperscoolthoughts.inkharbory.com/posts/text-to-speech-price-went-from-4.20-to-15-per-1m-characters-why

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