“Grok 4 is now free for all users. The free tier allows a small number of queries per day. Beyond that requires subscription. [@xai] Grok 4 is now free for all users worldwide! Simply use Auto mode, and Grok will route complex queries to Grok 4. Prefer control? Choose "Expert" anytime to always use Grok 4. For a limited time, we are rolling out generous usage limits so you can explore Grok 4’s full”