Product Information
What is Apertus?
As a fully open language model, Apertus allows researchers, professionals, and enthusiasts to build upon the model, adapt it to their specific needs, and examine any part of the training process. This sets Apertus apart from models that only provide access to selected components.
Trained on 15 trillion tokens across over 1,000 languages—40% of which are non-English—Apertus includes many languages that have been underrepresented in LLMs to date, such as Swiss German, Romansh, and numerous others.
AI researchers, professionals, and experienced enthusiasts can access the model through strategic partner Swisscom or download it from Hugging Face (a platform for AI models and applications) to deploy for their own projects. Apertus is available for free in two sizes—with 8 billion and 70 billion parameters, the smaller model being more suitable for individual use. Both models are released under permissive open-source licenses, allowing for use in education and research as well as broad societal and commercial applications.
How to use Apertus?
Apertus is a fully open, transparent, multilingual language model designed to enable researchers, professionals, and enthusiasts to build upon it, tailor it to specific needs, and examine any part of the training process.
Core Functions of Apertus
Privacy-focused, Offline Available, No Ads, No Registration, No Tracking, AI Chatbot
Privacy-Focused
Available Offline
Ad-Free
No Registration Required
No tracking
AI chatbot
Usage Scenarios of Apertus
- Researchers build upon models
- Professionals adapt models to specific needs
- Enthusiasts develop using models
- Inspect model training processes
- Deploy models for educational and research projects
- Deploy models for broad social and commercial applications
Common Questions about Apertus
What does Apertus do?
How do I use Apertus?
What are the core functionalities of Apertus?
What are the application scenarios of Apertus?
