Swiss universities launch Apertus, a fully open foundation model built for sovereign AI

Apertus – Open Foundation Model for Sovereign AI

Apertus is a foundation model from the Swiss AI Initiative, built jointly by EPFL, ETH Zurich, and CSCS. Training data, code, weights, and methods are all open. It comes in 8B and 70B sizes and is trained on 1,000+ languages from day one. Compliance is the headline feature: it respects opt-outs, strips PII, and prevents memorization, targeting EU AI Act requirements. The team claims performance competitive with top open models of equivalent scale, though the post does not include specific benchmark scores. A set of 16 small models called Apertus Mini was also released on June 15 to demonstrate distillation and quantization techniques.

Why it matters: The Swiss AI Initiative (EPFL, ETH Zurich, CSCS) launches Apertus — 8B/70B scales, 1000+ language training, fully open weights/data/code, with EU AI Act compliance claims. Strong concept and compliance angle, but the post lacks benchmark scores, training data scale, or indepen...