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Large Language ModelsLessWrong AIPublished: Apr 8, 2026, 19:00 JST

LessWrong user discovers Claude Opus 4.6 makes systematic errors in Ancient Greek exercises, launching public challenge to identify the mistakes.

LessWrong user discovers Claude Opus 4.6 makes systematic errors in Ancient Greek exercises, launching public challenge to identify the mistakes.

User began using Claude Opus 4.6 to study Ancient Greek and grade textbook problem sets from Chapter 3

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