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When Goblins Go Viral: How a Single Reward Signal Reshaped an AI’s Lexicon
06/02/2026
What if a tiny reward for playfulness could spawn an epidemic of mythical creatures across an entire language model? That’s exactly what happened with OpenAI’s GPT‑5.1 through GPT‑5.5. The goblins—as the team named them—were not a bug in the conventional sense. No metric spiked, no evaluation collapsed. Yet within months, mentions of “goblin” surged by […]

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