Mechanistic Research: LLM 'Emergence' Driven by Sparse Attention Routing
andrewgwils · x · 2026-08-04
The post highlights new mechanistic interpretability research showing that the "emergence" of new capabilities in LLMs is neither a magic byproduct of scale nor a metric illusion.
Instead, these sudden capabilities result from a brutal, high-variance optimization search that discovers sparse attention routing circuits during training.
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