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Jun 8, 2026 · Artificial Intelligence

How OpenAI’s Codex Team Built a Commercial App Without Writing a Single Line of Human Code

OpenAI’s Codex team started from an empty repository and, by relying solely on AI‑generated application logic, tests, CI configurations and documentation, built a commercial‑grade software product in one‑tenth the usual development time, detailing roles, repository knowledge, agent legibility, architecture constraints, and iterative autonomy.