Emergent abilities defined: threshold jumps per Wei et al 2022, not untrained generalization

gabriberton · x · 2026-09-20

gabriberton argues "emergent" shouldn't mean "the model learned A without being trained on A." He prefers the Wei et al 2022 definition: a task is emergent when small models absolutely can't do it but performance sharply jumps past a parameter threshold. Example: 3-digit addition, where sub-10B LLMs fail (a 1B model is as bad as a 1M one) but capability leaps after crossing 10B params. The thread clarifies two commonly conflated meanings of "emergence" in LLM discourse.

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