Elon Musk gave a glimpse of his artificial-intelligence startup’s first product: a bot named Grok whose sense of humor he demonstrated with jokes about Sam Bankman-Fried and how to make cocaine.

Musk, with a series of posts late Friday on X, included what he indicated were sample responses from Grok as he boasted that it will have a sarcastic sense of humor and the advantage of access to information via X, the platform formerly known as Twitter that he bought just over a year ago. He said Grok would begin limited testing on Saturday to a select group, and, after early beta testing, be made available to X’s Premium+ subscribers.