Emberikos: The vast majority of OpenAI code is now written by AI
Alexander Emberikos · OpenAI's Codex Lead: Why Coding as We Know It is Over · 20VC with Harry Stebbings · Feb 21, 2026 · at 18:51
Alexander Emberikos, Codex Product Lead at OpenAI, describes how internal software development workflows at OpenAI have shifted away from human-written code toward AI delegation.
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“I don't have a percentage stat for you, but I would say, like, the vast majority of code is written by AI, and I would say that now, probably, like, most people are not even, like, opening IDEs. Maybe if they are opening IDEs to, like, maybe you want to own the interface, right? So you'll, like, help flesh out, like, the interface between, like, two modules, and then, like, AI fills it out. Or maybe you want to, like, collaborate on a plan, but then have AI fill it out. The code itself is not being written by humans anymore.”
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