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

https://paxtonssmartperspective.cavandoragh.org/how-to-budget-grok-api-costs-for-a-chatbot-with-cached-context

As of September 2026, Grok offers two purchasing options: directly at grok.com and via platform X. There's no paid-plan trial, and the free tier limits you to about 10 prompts every 2 hours. Monthly plans at grok