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OpenEuroLLM secures strategic access to multiple supercomputers: A milestone for European language models

Thursday, December 18, 2025

OpenEuroLLM is set to develop high-performance language models for Europe. The major European collaborative project has now been granted 10 million GPU hours on Europe’s most powerful supercomputers.

"This is the fuel we need," says Magnus Sahlgren, Head of Research, NLU, at AI Sweden.

Rows of black server racks with colorful cables in a bright, modern data center with glass floor panels.

MareNostrum 5. Image credit: Barcelona Supercomputing Center

The EU has outlined a clear roadmap to secure Europe’s technical and economic independence in AI. A central component of this strategy is access to world-class computing power. OpenEuroLLM is now the first AI project to be granted strategic access to several of EuroHPC’s supercomputers simultaneously, including LUMI, Leonardo, Jupiter, and MareNostrum 5.

These resources will be used to train and develop a family of high-performance, open-source language models for all official EU languages. The decision secures the infrastructure to build next-generation, transparent and legally compliant language models that reflect Europe’s languages and cultural diversity.

Magnus Sahlgren

This is the fuel we need. Through OpenEuroLLM and this allocation, we can support the development of models that are not only powerful but also completely transparent and adapted to our legal requirements. This gives Swedish organizations a unique opportunity to build solutions they can fully trust.

Magnus Sahlgren

Magnus Sahlgren

Head of Research, NLU at AI Sweden

EU flag with text Co-funded by the European Union

This project has been co-funded by the Digital Europe Programme under Grant Agreement No. 101195233.

Transparency as a competitive advantage

Developing the models as open source is a strategic necessity for digital sovereignty. It enables full transparency and control—factors that are crucial for Swedish companies and the public sector to implement AI that is both competitive and compliant with European regulations.

The project brings together 20 leading partners, including EuroHPC centers and research institutes. AI Sweden’s participation rests on a solid foundation of experience—from the development of the first large Nordic language model, GPT-SW3, to the ongoing work within TrustLLM, which focuses on reliable models for Germanic languages.

"No single actor can match the resources required to train models of this size. By having AI Sweden as part of OpenEuroLLM, we can help connect the Swedish ecosystem to absolute world-class resources," says Magnus Sahlgren.

The work to utilize these new resources begins immediately as part of the project’s three-year plan to strengthen Europe’s AI capacity.

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