Kolibri

Kolibri is an English-German language model from Aleph Alpha, the German AI company, released on 3 October 2026. Aleph Alpha positions it as a sovereign model with open weights for regulated sectors, including public administration, industry and aerospace. It is a mixture-of-experts model with 78 billion parameters overall, and roughly 3 billion of them are active for each token.

Main features

• Long context: supports contexts of up to 1 million tokens.
• German and reasoning focus: specialised for German, reasoning, mathematics and agentic use, according to the company.
• Efficient serving: with few parameters active per token, it needs far less compute per token than a dense model of comparable total size.
• Self-hosting: the full weights are released in FP8 form on a BF16 base, and the company describes self-hosting with vLLM.

Customers and markets

Organisations that must run models on their own infrastructure, including in public administration, industry and aerospace.

Key facts

• Released: 3 October 2026
• Licence: Apache 2.0
• Validation: the training pipeline was first tested on Kolibri Origin, a 30 billion parameter model with a 65,000-token context
• Benchmarks: the company's own evaluations, not independently checked