The latest version of Elon Musk's artificial intelligence chatbot Grok is echoing the views of its billionaire creator, so much so that it will sometimes search online for Musk's stance on an issue before offering up an opinion.

Grok made multiple positive references to Hitler this week when queried about posts that appeared to celebrate the deaths of children in the recent Texas floods.

An Anti-Defamation League spokesperson called the chatbot’s output “irresponsible, dangerous and antisemitic, plain and simple,” while the Writers Guild of America East announced it was leaving the X...