Elon Musk's AI chatbot, Grok, was recently upgraded — and soon thereafter, unleashed a string of antisemitic posts on X and branded itself "mecha-Hitler." The chatbot was eventually shut down, but now,

X eventually deleted many of the obscene posts. Hours later, on Wednesday, X CEO Linda Yaccarino resigned from the company after just two years at the helm, though it wasn’t immediately clear whether her departure was related to the Grok issue.

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