AI language models show bias against regional German dialects

The study conducted by researchers from Johannes Gutenberg University Mainz, the University of Hamburg, and the University of Washington highlights a significant bias in AI language models, specifically GPT-5 and Llama, against speakers of regional German dialects. These models systematically rate dialect speakers less favorably than those who communicate in Standard German. This bias not only reflects the limitations of current AI technologies but also poses broader implications for social equity and representation in language processing. As AI becomes increasingly integrated into communication and education, addressing such biases is crucial to ensure that all language forms are treated with equal respect and consideration.