OpenAI's ChatGPT has surged to become the world's most downloaded app in March 2025, overtaking Instagram and TikTok. This growth is driven by a new feature enabling users to generate images in the style of Studio Ghibli, attracting millions of users worldwide. The app achieved a record 46 million downloads in March, split between 13 million on iOS and 33 million on Android. This surge reflects the growing role of AI in everyday digital engagement, with ChatGPT now serving approximately 800 million users, or 10% of the global population. During a TED conference, OpenAI CEO Sam Altman noted the platform's rapid expansion. The Ghibli-style image generation feature has not only increased user engagement but also boosted in-app revenue by 19%. OpenAI's recent $40 billion funding round has valued the company at $300 billion, underscoring its market position.