Switzerland has unveiled Apertus, its first fully open-source multilingual large language model, positioning the Alpine nation as a challenger to American and Chinese AI dominance with a privacy-focused alternative built for transparency and regulatory compliance. The announcement on September 2 marks a milestone in the global AI race, as Switzerland joins the growing movement toward sovereign AI infrastructure. A LLM from France, Mistral, is already known to some extent. I asked Perplexity to compare them:Apertus and Mistral are both open-source large language models, but they diverge significantly in their technical, regulatory, and linguistic approaches. Apertus is distinguished primarily by its comprehensive openness, transparent documentation, and strong privacy/regulatory focus, while Mistral is known for modular deployment options and performance-driven design for enterprise contexts.