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OpenAI’s Codex is part of a new cohort of agentic coding tools


The new crop of vibe coding tools can do more with less supervision, but reliability concerns linger.

Last Friday, OpenAI introduced a new coding system called Codex, designed to perform complex programming tasks from natural language commands. “In the beginning, people just wrote code by pressing every single keystroke,” explains Kilian Lieret, a Princeton researcher and member of the SWE-Agent team. Arguably the best measure of agentic programming progress is the SWE-Bench leaderboards, where developers can test their models against a set of unresolved issues from open GitHub repositories.

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