TextMath and reasoning

Kolibri

A European open reasoning model for German and English. A 78B mixture-of-experts with 3.5B active per token, a 262K-token context (tested up to a million) and tool calling.

Developer
Aleph Alpha, Germany
First release
Oct 2026
Latest release
Oct 2026
Sizes
78B-A3.5B
License
Commercial use allowedApache 2.0
Russian
Not supported
Running
On your own serverNeeds a GPU
Industries
Public sector, Legal, Documents and accounting, Software development
Deploy on your server Hugging Face

What it does

  • answers over long documents and RAG
  • an agent that calls tools
  • extracting structured data from documents
  • coding help

Where it is used

public sector and regulated industrieslegal departmentsin-house assistants on your own servers

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
no versions
1 GPUOne GPU with 16–80 GB — mid-size versions
no versions
ClusterServer with several GPUs — flagship versions
fits

Versions

  1. Kolibri 1 BF16
  2. Kolibri 1 (FP8)

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems.

Frequently asked questions

Can Kolibri be used in a commercial project?

Yes. License: Apache 2.0. It allows commercial use, but it is still worth having a lawyer review the license before launch.

What hardware does Kolibri need?

At minimum: Server with several GPUs — flagship versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does Kolibri support Russian?

No. The developer documentation lists the supported languages and Russian is not among them.

Where can I download Kolibri and what does it cost?

The Kolibri weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Details

Source: huggingface.co/Aleph-Alpha/Kolibri-1. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.