On July 8, Grok let loose a barrage of antisemitic phrases, attacked users with traditionally Jewish surnames, and began referring to itself as "MechaHitler."

Now, as Grok comes under fire for hate speech, its parent company is facing a lawsuit for potentially violating the Clean Air Act.

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.