At its annual developer conference, DevDay 2025, OpenAI unveiled a new feature allowing developers to build interactive applications directly within ChatGPT. Users can now access services from companies such as Booking.com, Expedia, and Spotify by simply mentioning the app in their conversations. This integration aims to enhance productivity and user engagement by providing a seamless way to interact with various tools. The Apps SDK will enable developers to create these applications, which can trigger actions and display interactive content within ChatGPT. OpenAI emphasizes user experience and privacy, stating that developers must collect minimal data and be transparent about permissions. Future plans include monetization options for these apps and the introduction of more services.