OpenAI’s CEO has stolen Musk’s thunder and it’s a lesson for every leader. Sam Altman and Elon Musk aren’t friends. They used to be colleagues back when the two were co-founders of OpenAI, and they seemingly shared the belief that artificial intelligence could be a huge net benefit for society.

Altman and Musk were OpenAI’s founding co-chairs in 2015, but their relationship has devolved into name-calling and lawsuits.

Musk’s shots at Stargate are the latest development in a yearslong feud between him and OpenAI CEO Sam Altman.

"Children should not be guilty of the sins of their parents, let alone their great grandparents," Musk said, apparently referring to Germany's Nazi past.

The billionaire was received by cheers while addressing a rally for Alternative for Germany where he told attendees they shouldn’t be ashamed of their history.