A Study of LLMs' Preferences for Libraries and Programming Languages

A new empirical study reveals that eight major LLMs exhibit systematic biases in code generation, overusing popular libraries like NumPy in 45% of cases and defaulting to Python even when unsuitable, prioritizing familiarity over task-specific optimality. The findings highlight gaps in current LLM evaluation methodologies and underscore the need for targeted improvements in training data diversity and benchmarking standards.