Muse Spark Open and Apertus 1.5 expose different kinds of openness
Weights, training evidence, licence terms and reproducible evaluations are separate criteria. Two releases make the differences concrete.
Topic
Transparency
Reading a model card like an auditor
The model card was proposed as a one-to-two-page disclosure. Current cards range from a 135-page system card to a benchmark table with a licence. Reading one well means checking it against the original template, the EU AI Act and the Stanford transparency index.