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Everything OpenAI announced at DevDay 2025: Agent Kit, Apps SDK, ChatGPT, and more

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Sabrina Ortiz/ZDNET

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OpenAI held its DevDay 2025 event this week on Oct. 6, and the company had plenty to share regarding how developers can build around its AI platform and various models. The big story with the event this year was how OpenAI is transforming ChatGPT into more of an operating system than a standalone service.

Through partnerships with brands like Canva, Zillow, and more, ChatGPT users can now directly communicate with linked services right from the chat box. OpenAI also introduced a new App SDK, AgentKit, ChatKit, and Codex during the keynote, a slew of templates for developers to leverage its AI.

While the event has concluded, you can find all the updates from this week's event below.

Everything announced at OpenAI Dev Day 2025

That's a wrap

By Sabrina Ortiz, Senior Editor / Oct. 6 at 2:05 p.m ET

And that's a wrap, folks -- Altman has concluded the event. I will be attending different sessions throughout the day, including a chat with Jony Ive and Atman, so stay tuned for even more updates and coverage on ZDNET.

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