I like to start by asking Codex to generate a few iOS screens first (using the Image Gen skill), then asking Codex + GPT-5.5 to implement them. Not necessary since iOS already has great default HIG, but it usually ends up closer to what I want when the design direction is clear!
@romainhuet
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Building iPhone Apps with Codex in 2026
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I really love building iPhone apps in Codex. Codex can design the screens, write the Swift code with GPT-5.5, run the app in Simulator without opening Xcode, and even click around with computer use to test it!
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Swift iPhone Development with AI Tools
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Same! Building iPhone apps in Swift is still one of my favorite things to do in Codex. These days I do it all there: GPT-Image-2 for the design, GPT-5.5 for the code, then ask Codex to run it in Simulator without opening Xcode. Hard to beat!
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Codex Launches Chrome Extension for macOS and Windows
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Codex now has a Chrome extension for macOS and Windows!
— Romain Huet (@romainhuet) 8 mai 2026
The cool part is that it can work with logged-in websites in the background while you keep using your browser, and combine Chrome with other tools like plugins to complete the task. https://t.co/9ZzvwldB52Codex now has a Chrome extension for macOS and Windows! The cool part is that it can work with logged-in websites in the background while you keep using your browser, and combine Chrome with other tools like plugins to complete the task.
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Future chat in Danish and French with GPT-Realtime-Translate
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Thank you! Next time we’ll just chat in Danish and French and let GPT-Realtime-Translate handle the rest!
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Realtime models translate live, think in background, and take action
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That’s what feels so magical with this new set of realtime models. Agents can translate live, keep conversations going while thinking in the background, preserve context, and even take action. To get started, ask Codex to add these models to your app!
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GPT-Realtime-Translate handles German interruption and preambles
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In this video, @dkundel interrupts me in German, and GPT-Realtime-Translate just figures it out. And here I was, ready to dust off my German! Then @jxnlco jumps in mid-demo to talk about preambles. GPT-Realtime-2 is listening, but stays quiet until I say “back to demo.”
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OpenAI introduces realtime speech-to-speech models for voice agents
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Big day for developers: new realtime audio models are here in the OpenAI API! 🗣️
— Romain Huet (@romainhuet) 7 mai 2026
Fun one to demo: live translation with GPT-Realtime-Translate, and GPT-Realtime-2, our first speech-to-speech reasoning model for voice agents.
Voice is becoming an interface you can actually ship. https://t.co/w2zES0ot7LBig day for developers: new realtime audio models are here in the OpenAI API! Fun one to demo: live translation with GPT-Realtime-Translate, and GPT-Realtime-2, our first speech-to-speech reasoning model for voice agents. Voice is becoming an interface you can actually ship.
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Meeting an Ambassador for Codex
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Thank you for being such a great ambassador for Codex. Really nice meeting you in person yesterday!
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Builders Share Feedback on GPT-5.5 After Weeks of Testing
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Excited for 5:55 tonight! Wish we had room for everyone. We’ll host more builder events soon. Also curious what you all think of GPT-5.5 after building with it for a couple weeks!