OpenAI released the source code for its Codex command‑line interface last week, revealing a 3,500‑word system prompt for the newly unveiled GPT‑5.5. Among routine instructions, the prompt explicitly forbids the model from talking about goblins, gremlins, raccoons, trolls, ogres, pigeons or any other creature unless the user’s query makes it directly relevant. The restriction appears twice in the document and is absent from prompts for earlier models, suggesting OpenAI is responding to a spike in off‑topic references to such beings. OpenAI staff say the rule is a technical safeguard, not a marketing stunt. Read more →