ELON MUSK'S XAI RELEASES GROK 4 FOR FREE GLOBALLY, CHALLENGES OPENAI'S GPT-5 LAUNCH

Summary from the TLDR AI newsletter

xAI's Grok 4 is now freely accessible to all users worldwide. Free users have generous usage limits for a limited time. Grok 4 features an Auto Mode, where the AI decides if a user prompt requires deeper reasoning or a simple response, and an Expert Mode, which allows users to manually trigger more in-depth answers. Access to Grok 4 Heavy remains exclusive to SuperGrok Heavy subscribers.