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OpenAI unveils GPT-5.3-Codex, its first AI model trained by its own AI

OpenAI has introduced GPT-5.3-Codex, a new generation of its Codex coding system that did more than write software for others ...

I used Xcode 26.3 to build an iOS app with my voice in just two days - and it was exhilarating

Want to see what agentic coding really feels like? Come along on my wild, wonderful, and terrifying two-day vibe coding adventure with Xcode 26.3.