At OpenAI's 2025 DevDay, its annual developer conference, a significant update was unveiled: developers now have the capability to create and integrate applications directly within the ChatGPT environment. Starting this Monday, everyday users can engage with interactive applications from renowned companies like Booking.com, Expedia, Spotify, Figma, Coursera, Zillow, and Canva, all accessible within ChatGPT. Additionally, OpenAI has rolled out a preview version of its Apps SDK for developers. This SDK comprises a suite of development tools specifically designed for crafting and integrating these innovative applications.