References to goblins and gremlins spiked with the release of GPT-5.1’s ‘Nerdy’ personality, and then spread to other models.

References to goblins and gremlins spiked with the release of GPT-5.1’s ‘Nerdy’ personality, and then spread to other models.

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Apr 30, 2026, 1:42 PM UTC

Image: The Verge

Emma Roth

is a news writer who covers the streaming wars, consumer tech, crypto, social media, and much more. Previously, she was a writer and editor at MUO.

OpenAI is opening up about its goblin problem. After a report from Wired revealed instructions to OpenAI’s coding model to “never talk about goblins, gremlins, raccoons, trolls, ogres, pigeons, or other animals or creatures,” the AI startup published an explanation on its website, calling references to the creatures a “strange habit” its models developed as a result of their training.

As outlined in the blog post, OpenAI began noticing metaphors referencing goblins and other creatures starting with its GPT-5.1 model — specifically when using the “Nerdy”…