# Kolibri 1 Usage, Cost & Rank | OpenCode Data

> Kolibri 1 costs $0.13 per 1M input tokens and $0.51 per 1M output tokens.

Aleph Alpha's German and English mixture-of-experts reasoning model (78B total, 3.46B active) for chat, RAG and agents

- Page: https://opencode.ai/data/aleph-alpha/kolibri-1
- JSON: https://opencode.ai/data/aleph-alpha/kolibri-1.json
- Model ID: aleph-alpha/kolibri-1
- Lab: Aleph Alpha

## Model facts

| Fact | Value |
| --- | --- |
| Context window | 1M |
| Max output | - |
| Knowledge cutoff | 2026-06-18 |
| Release date | 2026-10-03 |
| Input modalities | text |
| Output modalities | text |
| Reasoning | Yes |
| Tool calling | Yes |
| Open weights | Yes |
| Weights | [Hugging Face](https://huggingface.co/Aleph-Alpha/Kolibri-1) |

## Pricing: USD per 1M tokens

| Input | Output | Cached input | Cache write |
| --- | --- | --- | --- |
| $0.13 | $0.51 | $0.08 | - |

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.