The new app framework also supports helpful apps from Booking.com, Canva, Coursera, Expedia, Figma and Zillow to begin with.
More apps are slated for «later this year.»
You can now chat with apps in ChatGPT. pic.twitter.com/T9Owi3POim
— OpenAI (@OpenAI) October 6, 2025
As is the usual fare, apps aren’t available inside the EU, but OpenAI expects to bring the apps over there «soon.» Mileage may vary on this one, sometimes it comes lightning fast and other times the wait can be longer.
The app feature also comes with an Apps SDK for developers to build their own apps, and OpenAI says they will review new apps for inclusion in ChatGPT «later this year,» as well.
Lots can be said about this, and already has, but it certainly does turn ChatGPT into a platform, and you might be able to do lots of useful stuff in the app in the future.
Altman also used the Dev Day livestream to launch quite a few helpful new tricks for developers.
AgentKit and API news
Leaked yesterday, OpenAI unveiled AgentKit, which includes a customizable chat UI, Agent Builder, a workflow creator for agents with a friendly GUI, and Guardrails, a safety screening tool.
In addition, OpenAIs most powerful ChatGPT model, the GPT-5 Pro, is now available in the API, costing a whole lot more than vanilla GPT-5, but significantly less than o3-pro at $15 for 1 million input tokens and a whooping $120 for output.
Codex in Slack
You can also now use Codex in Slack with a simple @Codex call. There is a new Codex SDK which lets you embed CLI-like interfaces wherever you like. And there are new admin tools for Edu, Business and Enterprise accounts.
They also launched a priority processing tier for the GPT-5 API which is 40% faster and double the price.
All in all, the keynote hit high marks for the consumer-focused apps, with lots of red meat for developers, as predicted.
Read more: The Verge and TechCrunch on the apps. Ars Technica and Wired see apps as a power play.