Apertus 70B Instruct
Swiss AI Initiative · 2025-09-02 · 70.6B parameters
Apertus 70B Instruct is the instruction-tuned variant of the 70B Apertus foundation model, developed jointly by EPFL, ETH Zurich, and the Swiss National Supercomputing Centre (CSCS) as part of the Swiss AI Initiative, released in September 2025. Its base model was pretrained from scratch on 15 trillion tokens spanning over 1,000 languages with 40% non-English data—including underrepresented languages like Swiss German and Romansh—using fully open and compliant training data on the Alps supercomputer. Apertus is fully open-weight and open-data, designed to advance European AI sovereignty and multilingual transparency.