Telegram cofounder and CEO Pavel Durov offered a quick personality assessment of some of his biggest tech rivals in a recent interview, calling Elon Musk "very emotional" and saying Sam Altman may not have the technical chops. Elon runs several companies at once, while I only run one," he told the French outlet Le Point. Both men have fathered many children — Musk has at least 11 known kids, and Durov told Le Point that he has more than 100 through sperm donation. A spokesperson for WhatsApp previously told BI that the app was "born with privacy in our DNA long before Telegram came along." Representatives for Musk, Zuckerberg, and Altman did not immediately respond to Business Insider's request for comment.