AI RESEARCH
LLMs Can Get "Brain Rot": A Pilot Study on Twitter/X
arXiv CS.CL
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ArXi:2510.13928v2 Announce Type: replace We propose and test the LLM Brain Rot Hypothesis: continual exposure to junk web text induces lasting cognitive decline in large language models (LLMs). To unveil junk effects, we designed a novel controlled experiment on real Twitter/X corpora, by constructing junk and reverse-controlled datasets via two orthogonal operationalizations: M1 (engagement degree) and M2 (semantic quality), with matched token scale and