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Post
mr. TIM
timkellogg.me
did:plc:ckaz32jwl6t2cno6fmuw2nhn
OpenAI did a full post-mortem on the goblin situation and it has a lot of details on their training process
root cause: synthetic data
it emerged in 5.1, but they use the last model to judge outputs during RL, which favored goblins in later models. It then leaks beyond RL into all synthetic data
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2026-04-30T11:34:28.766Z