Elon Musk has accused Apple of systematically boosting OpenAI’s ChatGPT in its App Store rankings while relegating his own xAI chatbot, Grok, to lower positions. In a series of posts this week, the Tesla and X owner said Grok has been stuck in fifth place even as ChatGPT has held the top spot for nearly a year, calling the situation an “unequivocal antitrust violation” and vowing that xAI would “take immediate legal action.” Musk also reignited his long-running feud with OpenAI Chief Executive Officer Sam Altman, trading insults and calling Altman a “liar.” Apple rejected the allegations on 14 August, telling AFP that the App Store “is designed to be fair and bias-free.” The company said it highlights thousands of apps using algorithmic recommendations, expert curation and objective criteria, and that its goal is to provide both a safe search experience for users and equal opportunities for developers. The dispute adds a new front to the rivalry among Musk, Apple and OpenAI as technology companies compete to dominate consumer artificial-intelligence software. Musk co-founded OpenAI in 2015 but left in 2018 and launched xAI in 2023. ChatGPT remains the most-downloaded generative-AI app globally, while Grok is bundled with paid subscriptions on X.