GPT-5.5 Model System Prompt Adds Special Ban: Strictly Prohibits Discussing Goblins and Other Specific Creatures

Ever seen irrelevant creature content in AI chats? The GPT-5.5 model now has a special rule. Tech media found that its open-source system prompt explicitly bans discussing goblins, gremlins, raccoons, trolls, ogres and pigeons. This ban appears twice, alongside regular rules like no emojis.

This ban is unique to GPT-5.5—earlier models didn’t have it. Analysts think it’s to fix the model’s frequent “hallucinations” of these creatures in unrelated conversations. Many users have reported this issue, making it a hot topic in the community.