Grok 4 was trained on Colossus, a supercomputer that xAI launched in Memphis last year. The system featured 100,000 graphics ...

The takeaway, at least from a technical standpoint, is that Grok 4 is now firmly in frontier-model territory. That’s a meaningful shift for xAI, which just months ago was primarily known for its ...

Former X CEO Linda Yaccarino's resignation came hours after her boss Elon Musk's AI chatbot, Grok, targeted her in a graphic sexual screed for all to see.