OpenAI is launching a new way for developers to build applications inside of ChatGPT. Starting Monday, users in ChatGPT will be able to access interactive applications from companies like Booking.com, Expedia, Spotify, Figma, Coursera, Zillow, and Canva. OpenAI is also launching a preview of the Apps SDK, the developer-facing toolkit to build these apps. OpenAI made the announcement at its annual developer conference, DevDay 2025. “We want ChatGPT to be a great way for people to make progress,