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Apertus
AI Model
Low Confidence
Apertus is a text AI model developed by Swiss AI Initiative. This full performance model is based on Apertus-70B-2509. The model is licensed under Apache-2.0. Released in 2025-09. Open-data open-weights models, multilingual in >1000 languages, developed at Swiss public universities.
Transparency Score
Weighted across four pillars · updated January 26, 2026
Overall grade
20% weighted
Model
—
Not yet assessed
Infrastructure
—
Not yet assessed
Openness Assessment
57%Partially Open
8 Open
0 Partial
1 Closed
5 Unknown
Availability
1/5 Open
Documentation
4/6 Open
Access Methods
3/3 Open
Capabilities
Text Generation
Summarization
Translation
Question Answering
Vendor Information
Complete information about the vendor/provider of this AI application
Swiss AI InitiativeView all products →
Contact Information
EU AI Act Provider Information
Verification Status:
Unverified
Compliance & Risk
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Added: January 26, 2026
Updated: January 26, 2026
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