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Codex fixed CI at OpenAI for 1,000 hours on a 200-word prompt: 5 config decisions that held it together

At OpenAI's DevDay, an engineer on the engineering acceleration team described a Codex run that worked on failing CI tests for six weeks, over 1,000 hours total. It opened more than 100 pull requests a week, pushed more than 1,000 commits, merged 213 of its own fixes, and sent over 600 Slack messag…

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  1. 2026-11-11 11:08 · DEV Community — AI
    Codex fixed CI at OpenAI for 1,000 hours on a 200-word prompt: 5 config decisions that held it together

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