OpenAI’s DevDay 2025[1] featured a major focus on vibe coding. The company, which boasts that it now has more than 800 million weekly active users for ChatGPT, announced a variety of new tools for developers during its annual event in San Francisco. Headlining the announcements: the ability to build with apps directly in ChatGPT (including eventually allowing “mature experiences” once age verification is in place) and the introduction of a toolkit that will help users build and deploy their own AI agents.
In OpenAI’s apparent effort to turn ChatGPT into a full-on frontend development environment, the company announced its new Apps SDK[2] (Software Development Kit) that will allow devs to pull in supported third-party apps to complete tasks. In a demo, the company showed ChatGPT working with Zillow to generate a map of homes available for sale in Pittsburgh. Zillow created an interactive map based on the prompt, and the user was able to ask additional questions based on the map. The functionality should allow users to create tools using third-party apps, which they can preview directly within ChatGPT.
According to OpenAI[3], Apps SDK is available immediately for Free, Go, Plus, and Pro plans. Support will be available out of the gate for Booking.com, Canva, Coursera, Figma, Expedia, Spotify, and Zillow. The company also said that it plans to offer support for DoorDash, OpenTable, Target, and Uber in the near future. For now, users will only be able to make and use the apps in preview, but it plans to allow developers to submit apps later this year, with a directory for apps planned so that developers can share their vibe-based creations.
There are lots of details yet to come regarding what comes from Apps SDK. Altman promised monetization guidelines, for instance, are in the pipeline. Also on the way: “mature experiences.” According to OpenAI’s App developer guidelines[4], “Apps must be suitable for general audiences, including users aged 13–17. Apps may not explicitly target children under 13.” But that won’t be the case forever. “Support for mature (18+) experiences will arrive once appropriate age verification and controls are in place,” it reads[5].
The company recently introduced age verification tools[6] designed to shift underage users into a ChatGPT experience with much stricter guidelines following a wrongful death lawsuit filed against the company[7] by the family of a teenager who died by suicide after extensive conversations with the chatbot. It appears that once it hammers out those details, it’ll open the floodgates to more “adult” functions.
In addition to Apps SDK, the company also rolled out its AgentKit API[8] (Application Programming Interface), which will allow users to build their own agentic AI tools. It’s a significant expansion of OpenAI’s Agent[9], which it introduced earlier with the promise that the system could navigate the web autonomously to complete tasks assigned to it by the user.
Sticking with the vibe coding theme, AgentKit’s primary feature is its Agent Builder, which allows users to program their AI agent’s functionality through a visual interface. Altman described it as being like Canva for building agents, making it more accessible to those who are less technical.
References
- ^ DevDay 2025 (openai.com)
- ^ Apps SDK (openai.com)
- ^ According to OpenAI (openai.com)
- ^ According to OpenAI’s App developer guidelines (developers.openai.com)
- ^ it reads (developers.openai.com)
- ^ age verification tools (gizmodo.com)
- ^ wrongful death lawsuit filed against the company (www.nbcnews.com)
- ^ AgentKit API (openai.com)
- ^ OpenAI’s Agent (gizmodo.com)