How OpenAI is using GPT-5 Codex to improve the AI tool itself
SMRTR summary
OpenAI's Codex AI coding agent has become so sophisticated that it now builds and improves itself, with the vast majority of Codex development handled by Codex itself. The tool operates as a cloud-based software engineering agent that can write features, fix bugs, and create pull requests while running in sandboxed environments. OpenAI employees treat Codex as a teammate, assigning it tasks through the same project management tools used for human colleagues.
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