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Why is GPT-5.4 obsessed with Goblins?

7•pants2•8h ago
After the 5.4 update, ChatGPT uses "goblin" in almost every conversation. Sometimes It's "gremlin." A recent chat of mine used goblin 3 times in 4 messages:

> this stuff turns into legal goblins fast

> hiding exclusions like little goblins

> But here’s the important goblin

I am not the only one to notice this, there are many Reddit threads on it:

https://www.reddit.com/r/ChatGPT/comments/1roci77/anyone_elses_chatgpt_obsessed_with_goblins_since/

https://www.reddit.com/r/ChatGPT/comments/1rll8hb/suddenly_obsessed_with_goblins_and_gremlins/

---

This is such a weirdly specific word that it chooses to use in over half of its conversations (IME, you should search your chat history for goblin/gremlin and report).

I'm genuinely curious what happens in their post-training that leads to something line this.

What's ironic is OpenAI has been touting 5.4's great personality, but these quirks irritate me like a tiny chaos goblin.

Comments

arthurcolle•8h ago
why don't you ask the model?
Tarraq•7h ago
Not to scare away the goblins!
ghostlyInc•2h ago
LLMs tend to pick up recurring metaphors from training data and reinforcement tuning.

Words like “goblin”, “gremlin”, “yak shaving”, etc. are common in engineering culture to describe hidden bugs or messy systems. If those appear often in the training corpus or get positively reinforced during alignment tuning, the model may overuse them as narrative shortcuts.

It's basically a mild style artifact of the training distribution, not something intentionally programmed.

d--b•36m ago
They seem a lot more common in OP's conversations than in any regular engineering conversation though. Like I've been an engineer for 20 years. I don't remember the phrase used in my work context, ever.

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