TechApr 30, 20268 minOpenAI slayed the goblins that infested GPT-5.5OpenAI published a full investigation into why GPT-5.1+ kept inserting goblin and gremlin metaphors, tracing the cause from a Nerdy persona's reward signal through SFT data contamination to a Codex developer prompt suppression.OpenAILLMCodex強化学習AI安全性
