Polar: A Benchmark for Evaluating Political Bias in LLMs

arXiv:2606.12922v1 Announce Type: new Abstract: Political bias in large language models (LLMs) is increasingly significant, but difficult to measure reproducibly across political and linguistic contexts. We introduce Polar, a 4,026-instance multiple-choice benchmark that measures political bias through option-level likelihoods rather than prompt-based generation. Polar covers two ideological axes and eight issue categories derived from the Manifesto Project, and evaluates models in parallel across U.S. and South Korean political contexts. Across 38 LLMs, measured bias varies systematically wit

Source: arXiv cs.CL — read the full report at the original publisher.

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