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The original was posted on /r/singularity by /u/MetaKnowing on 2024-10-19 17:46:00+00:00.

Original Title: AI researchers put LLMs into a Minecraft server and said Claude Opus was a harmless goofball, but Sonnet was terrifying - “the closest thing I’ve seen to Bostrom-style catastrophic AI misalignment ‘irl’.”