Uploaded October 2025 | Updated September 2026, 5 days ago

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OpenAI dropped a ton of new releases at DevDay 2025. Here are the top things we're excited about from these new drops.

* Apps on ChatGPT: Chat with apps directly in ChatGPT and build them with the Apps SDK in preview.
* AgentKit: Build with OpenAI's toolkit for production-grade agents.
* Updates to Codex for coding with AI
* Sora 2 is in the API
* New gpt-realtime-mini model that's cheaper and faster than gpt-realtime
* GPT-5 Pro in the API

... and so much more. Find out the full details here: openai.com/devday