Elon Musk’s AI company has announced that its most advanced model, Grok 4, is now free for all users worldwide. The update was shared via the company’s official X account. According to xAI, you can now simply switch to Auto mode and allow the system to decide when to route complex queries to Grok 4.
Grok 4 is now free for all users worldwide!
— xAI (@xai) August 10, 2025
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… pic.twitter.com/VW1Pn3ivke