To get the most accurate answer from a large language model, make sure to prompt it in the right language. We explain the widespread problem https://www.economist.com/science-and-technology/2026/03/18/top-ai-models-underperform-in-languages-other-than-english?taid=69bc3e575e19590001dc43b2&utm_campaign=trueanthem&utm_medium=social&utm_source=voante