OpenAI official reveal: Where does the strange rule "no talking about goblins" in the Codex system prompt come from?
OpenAI released the official blog 'Where the goblins came from' today, explaining in detail the origin of the widely discussed rule "Never talk about goblins, goblins, raccoons, trolls, ogres, and pigeons" in the Codex 5.5 system prompt. The article reveals the behavior transfer phenomenon in RLHF training, and how the self-circulation of AI model training data allows strange behaviors to be "inherited" to the next generation model.
， OpenAI Codex 5.5
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- 2026-04-28（）→ 2026-04-30（OpenAI ）
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- RLHF 「Nerdy 」 →
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OpenAI 「」 RLHF 。 Claude Code、ChatGPT ，——，「」。
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