Nikita Bier, Head of Product at X, has called out Perplexity CEO Aravind Srinivas over the company's alleged undisclosed ad campaigns on the platform. "Can you please stop...It deceives users, and it doesn't reflect well on your company or your integrity," Bier said. Bier shared a post that alleged undisclosed promotions were being run for Perplexity's Personal Computer AI assistant.