# Where the goblins came from

DevFeed: [Where the goblins came from](<https://devfeed.tech/articles/where-the-goblins-came-from-6719.md>)

Original publisher: [Read original article](<https://openai.com/index/where-the-goblins-came-from>)

Published: 2026-04-29T20:00:00Z

Content type: article

Language: en

Sources: [OpenAI News](<https://devfeed.tech/sources/openai-news.md>)

Topics: [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [AI Models](<https://devfeed.tech/topics/ai-models.md>), [ChatGPT](<https://devfeed.tech/topics/chatgpt.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [analysis](<https://devfeed.tech/tags/analysis.md>), [chatgpt](<https://devfeed.tech/tags/chatgpt.md>), [customization](<https://devfeed.tech/tags/customization.md>), [launch](<https://devfeed.tech/tags/launch.md>), [models](<https://devfeed.tech/tags/models.md>), [production](<https://devfeed.tech/tags/production.md>), [publication](<https://devfeed.tech/tags/publication.md>), [training](<https://devfeed.tech/tags/training.md>)

## AI overview

The article investigates why GPT-5 models increasingly used goblin and gremlin metaphors. It traces the behavior to small training incentives associated with the Nerdy personality customization, describes its growth after GPT-5.1 and GPT-5.4, and reports the connection through production-traffic analysis.

## Source excerpt

How goblin outputs spread in AI models: timeline, root cause, and fixes behind personality-driven quirks in GPT-5 behavior.