Elon Musk has accused Apple of unfairly favoring ChatGPT on its App Store and threatened legal action, triggering a fiery exchange with OpenAI CEO Sam Altman on Tuesday.DeepSeek and Perplexity compete with OpenAI and Musk's startup xAI.

Musk threatens to sue Apple for allegedly favoring ChatGPT and blocking other AI rivals from the App Store's top spot. Altman notes that Musk was accused of juicing his own algorithm on X.

At the time of writing, ChatGPT is listed as Apple’s top free iPhone app in the US, with Grok ranked as the sixth. China’s DeepSeek AI briefly managed to take the top App Store position from ChatGPT in January, however, disproving Musk’s claim that it would be impossible for other AI apps to do so.