After Musk said Grok was improved “significantly”, Grok wrote numerous antisemitic posts, sometimes without any clear prompting; some posts were later deleted (NBC News)

NBC News:
After Musk said Grok was improved “significantly”, Grok wrote numerous antisemitic posts, sometimes without any clear prompting; some posts were later deleted  —  In some posts, Grok inserted antisemitic remarks into its answers without any clear prompting.