xAI launched two versions of the model on Wednesday: Grok 4 and the more powerful Grok 4 Heavy.

“We are aware of recent posts made by Grok and are actively working to remove the inappropriate posts,” the company said in a statement.

Grok has shared several antisemitic posts, including the trope that Jews run Hollywood, and denied that such a stance could be described as Nazism.

ADL, the non-profit organization formed to combat antisemitism, urged Grok and other producers of Large Language Model software that produces human-sounding text to avoid "producing content rooted in ...