Elon Musk, while introducing himself at xAI's Grok 3 launch, joked, "I'm Elon...I don't do anything...I just show up occasionally." He explained the name 'Grok' comes from Robert Heinlein's novel 'Stranger in a Strange Land' and it's used by a character raised on Mars and means to fully and profoundly understand something. Elon called Grok 3 'smartest AI on Earth'.