xAI made its all-new Grok 4 AI model free for all, with usage limits

Once users hit the rate limit, they will be required to get a subscription or go back to Grok 3

Grok 4 Heavy, meanwhile, remains limited to SuperGrok subscriberspic.twitter.com/sp0tfJXFf1

— The Rundown AI (@TheRundownAI) 11 août 2025

xAI made its all-new Grok 4 AI model free for all, with usage limits Once users hit the rate limit, they will be required to get a subscription or go back to Grok 3 Grok 4 Heavy, meanwhile, remains limited to SuperGrok subscribers

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