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simon_willison · Apr 28, 2026 · news
Source brief
Quoting OpenAI Codex base_instructions
simonwillison.netApr 28, 2026
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In brief
Never talk about goblins, gremlins, raccoons, trolls, ogres, pigeons, or other animals or creatures unless it is absolutely and unambiguously relevant to the user's query. — OpenAI Codex base_instructions , for GPT-5....
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