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Light blue geometric triangles with the Apertus 1.5 wordmark and EPFL, ETH Zurich and CSCS logos

ResearchAnalysis

Apertus 1.5 report: inside Switzerland's fully open model

The Swiss AI Initiative published detailed release notes for Apertus 1.5 on October 15, based on its technical report. The 8B and 70B models now understand images and audio, gain a 262k-token context and an optional thinking mode, and every training stage, dataset and checkpoint is public.

· 3 min read