OpenAI has announced significant updates during its DevDay 2025, marking a pivotal shift for ChatGPT from a conversational AI tool to a comprehensive application platform. The introduction of the Apps SDK enables developers to create and integrate third-party applications directly within the ChatGPT interface, enhancing the user experience by allowing seamless access to diverse services without leaving the conversation. Initial partners in this venture include prominent companies such as <a href="http://Booking.com" target="_blank" rel="noopener nofollow">Booking.com</a>, Canva, Figma, and Spotify.
The Apps SDK is built on the open Model Context Protocol, which facilitates developers in creating data-connected, interactive applications tailored for ChatGPT’s massive user base, reportedly reaching over 800 million users weekly. This integration positions ChatGPT as an AI operating system where users can perform tasks such as browsing real estate listings, designing visuals, and booking services, establishing a potential new app marketplace.
OpenAI also introduced the GPT-5 Pro API, offering high accuracy for sectors like finance, legal, and healthcare, alongside Sora 2 for video and audio generation. In addition, there is the AgentKit, a no-code tool that allows users to create AI-driven workflows, targeting non-technical users who require process automation with minimal coding requirements.
To address security and functionality challenges, OpenAI emphasized the importance of security measures against connector exploits and prompt injection vulnerabilities. The platform’s capability for real-time interactions and integration of external systems enhances its potential as a programmable automation hub, requiring careful testing and user approval for operations.
Through these advancements, OpenAI is not only enhancing ChatGPT’s application capabilities but also positioning the platform in the competitive landscape against tech giants like Google and Microsoft. ChatGPT’s transformation into an AI-native computing platform offers promising opportunities for developers while redefining user interactions through an integrated AI operations system.

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OpenAI announced at DevDay 2025 that ChatGPT is evolving into an application platform with the Apps SDK, enabling developers to build third-party apps directly in the interface. Built on the Model Context Protocol, the SDK targets ChatGPT's 800 million weekly users and includes partnerships with Booking.com, Canva, Figma, and Spotify. Additional releases include the GPT-5 Pro API for high-accuracy use cases in finance and healthcare, Sora 2 for video/audio generation, and AgentKit for no-code workflow automation. Security measures address connector exploits and prompt injection vulnerabilities as ChatGPT positions itself as an AI operating system competing with Google and Microsoft.

OpenAI Expands ChatGPT Capabilities with New Apps and Tools