Swiss’s First Open Source LLM Published Apertus
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In September 2, 2025, EPFL, ETH Zurich and Swiss National Supercomputing Centre (CSCSCS) was produced with the joint effort of public research institutions such as 100% open source, transparent and multilingual, artificial intelligence has been published in a large language model (LLM) Apertus.
Apertus, which was seen as a milestone in terms of public research group, transparency, diversity and Generative AI (Artificial Artificial Intelligence) called Swiss AI Initiative (Switzerle Artificial Intelligence Initiative), explained how a reliable, dominant and inclusive artificial intelligence model can be developed.
How to Use Apertus AI?
Artificial intelligence language model now Apertus Hugging Face Although it is open to access with a flexible open source license to examine architecture, education data and documentation through the platform, it can be easily downloaded by experts and integrated into projects. But for general audience, artificial intelligence needs servers, cloud resources or special interfaces to use and try in practical way.
1 Starting on September and going until October 5, 2025 Swiss {ai} Weeks Apertus AI, which was started to be introduced in its event, was first launched in this event with the partnership of Public AI Inference Utility through Swiscom. Also those who want to test the language model Apertus for the first time in Chatbot format Public AI You can experience by visiting the website.
What is the Purpose of Apertus AI?
Apertus AI’s technical leader and researcher in ETH Zurich, Science Human Imanol Schlag announced that the Apertus Swiss AI model was produced to serve completely public benefit.
The Swisscom Research Director Daniel Dobos; Apertus demonstrates our commitment to shaping a secure and responsible AI ecosystem that serves public benefit and strengthens the digital domination of Switzerland.
What Are The Featured Features of Apertus AI?
Apertus AI features open source and transparency as well as strong technical properties. Here are the features of Apertus AI:
Innovative Approach to Artificial Intelligence World
With the democraticization of artificial intelligence, artificial intelligence practices and qualities are discussed in a more fair way; Meta, OpenAI and xAI’s sector monopolyization efforts are braking the spread of artificial intelligence to the base.
However, Apertus AI is fully open source and brings an innovative approach to the world of artificial intelligence, developing public benefit by public institutions.
Apertus AI Transparent and Suitable for EU Artificial Intelligence Laws
Apertus artificial intelligence language model, which places transparency center, pay attention to its comprehensive documentation, educational materials and resource code with 100% open source.
In addition, Apertus was developed in accordance with the principles of transparency of the EU Artificial Intelligence Act with the data protection and copyright laws of Switzerland.
However; education data was created from public data and developed to respect the opt-out requests of websites (Robots.txt etc.).
Apertus AI Technical Specifications
- There are two versions consisting of 8 billion and 70 billion parameters.
- Apertus AI knows more than 1000 languages. These languages are available in Turkish.
- Apertus AI is trained on a very large set of data (about 15 trillion tokens).
- A LLM built for public benefit by public institutions and fully open source coded.
- Regular updates are planned by the EPFL–ETH Zurich–CSCSCS team.
- accessible from the model page in Hugging Face and Public AI infrastructure
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