# KIEFER and Sophea.ai, in collaboration with NVIDIA and the OpenACC organization, officially launched the KIEFER AI Open Hackathon 2026.

*genai · news · 2026-04-30 · Proto Thema*

## Key points

- KIEFER announced Hugging Face, its first internally developed open-source protocol, at the event.
- Sophea K1 is Greece’s first open-source large language model, available under the MIT license.
- Sophea K1 achieves 83.34% accuracy on the GreekMMLU benchmark across multiple disciplines.
- A new model, built with NVIDIA and based on Nemotron, will launch by September 2026.
- All seven hackathon teams receive early access to Greece’s first sovereign AI data center in October 2026.

**Companies:** NVIDIA, KIEFER, Sophea.ai
**Countries:** Greece

[Read the full story on Proto Thema](https://en.protothema.gr/2026/04/30/kiefer-ai-open-hackathon-2026-seven-teams-global-open-source-launch-and-greeces-first-sovereign-ai-infrastructure/)

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