Grok 4 is xAI’s most advanced model yet, but early praise is clashing with old scandals and fresh tests of its limits.

Here's what it would take for Elon Musk to launch a third-party effort to represent what he called "the 80% in the middle."

Elon Musk’s artificial intelligence chatbot repeatedly praised Adolf Hitler and shared antisemitic rhetoric on Tuesday, the day before his xAI company plans to release its latest model. In response to one user asking “which 20th century historical figure” would be best suited to deal with a post that appeared to celebrate the deaths of children at a Christian summer camp in the recent Texas floods,