Apple last year partnered with OpenAI to integrate its ChatGPT chatbot into iPhone, iPad, Mac laptop and desktop products.

After spending last week hyping Grok's spicy new features, Elon Musk kicked off this week by threatening to sue Apple for supposedly gaming the App Store rankings to favor ChatGPT over Grok.

Apple has denied Elon Musk's accusation that it's favoring OpenAI in its App Store rankings and making it impossible for other AI companies to reach the top. In a statement sent to Bloomberg, Apple said the App Store is "designed to be fair and free of bias.