Elon Musk has spent years warning that artificial intelligence could one day outstrip human control, but his latest alarm is focused on something that looks deceptively familiar: a social network.

The billionaire’s decision to merge his A.I. start-up with his rocket company will test investors’ interest in giant ...

It was last year that Musk combined Twitter with xAI, the business behind his Grok AI chatbot, valuing the social media site at $30bn. The world’s richest man then revealed plans on Monday to merge ...