LisanBench: New Benchmark Tests LLMs' Word Chain Reasoning

scaling01 · x · 2026-08-21

LisanBench is a new benchmark that asks LLMs to build the longest chain of non-repeating English words, each differing by one letter. It measures rule-following, knowledge, planning, recall, and persistence. It offers leaderboards, timelines, efficiency analysis, and failure mode insights.

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