Kolibri: A Sovereign Open-Weight Model

Kolibri is Aleph Alpha's bid for teams that need a capable model they can host themselves under European data-residency rules. The company's announcement describes a 78B mixture-of-experts model with about 3B parameters active per token and context of up to 1M tokens, built with a training pipeline it says is reusable for further sovereign models. The Apache 2.0 license matters as much as the size: it allows commercial use and modification without the custom terms attached to many open-weight releases. An independent walkthrough by Tejas Kumar lists slightly different figures, 3.5B active parameters and 262k context, so confirm the model card before sizing hardware or planning long-context work. That walkthrough also covers tokenizer behavior and where the model falls short, which is the more useful read if you are deciding whether Kolibri fits a German-language workload or whether a larger general model still wins.