AI owner Elon Musk made some big claims about Grok’s capability, saying it was “better than PhD level in every subject.”

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.

Linda Yaccarino is stepping down from her role as CEO of X, Elon Musk’s social media platform.