https://techcrunch.com/2024/04/05/x-makes-grok-chatbot-available-to-premium-subscribers/

Social network X is rolling out access to xAI’s Grok chatbot to Premium tier subscribers after Elon Musk announced the expansion to more paid users last month. The company said on its support page that only Premium and Premium+ users can interact with the chatbot in select regions.

Last year, after Musk’s xAI announced Grok, it made the chatbot available to Premium+ users — people who are paying $16 per month or a $168 per year subscription fee. With the latest update, users paying $8 per month can access the chatbot.