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Your Language Model May Understand "Let Alone" Better Than You Thought

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We all know "let alone" means something stronger than what came before—but did the AI actually *get* that? It turns out mid-sized open models do, much like how you pick up idioms by reading, not by explicit instruction.

This means open-source language models have more subtle linguistic competence than we've given them credit for, and that understanding comes from the same learning dynamics as human language acquisition.

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