Sam Altman, CEO of OpenAI, has publicly accused Elon Musk of manipulating the social media platform X. Musk responded by calling Altman a liar. The exchange highlights ongoing tensions between the two tech figures, with Musk's recent AI project Grok gaining attention for its rapid progress despite a small team. The dispute has drawn commentary from various observers, noting Altman's earlier dismissive remarks about Musk and the competitive dynamic between Musk and Altman in the technology and AI sectors.