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Lukas Twist

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Preprint Aug 2026

LangChoiceBench: Measuring and Explaining Programming-Language Choice in LLMs

LangChoiceBench is introduced, a project-level code-generation benchmark for measuring Python preference, recommendation-implementation consistency, and language diversity, and it is found that Python remains heavily over-selected, recommendation-implementation consistency is low, and smaller open-weight models generally show stronger Python preference and lower language diversity.

Lukas Twist, Twm Stone, Helen Yannakoudakis et al. · 0 citations