# Model catalog

> Open-weight models served by Kurrens, with context length, precision, and capabilities.

Kurrens serves open-weight models on infrastructure we operate. Every model is identified by its **Hugging Face id** and
lists the **numerical precision** we serve it at. Click an id to copy it.

<ModelExplorer />

Prices are listed on [kurrens.ai/pricing](/pricing). During pre-launch they are estimates and may change.

## Listing models programmatically

```bash
curl https://api.kurrens.ai/v1/models -H "Authorization: Bearer $KURRENS_API_KEY"
```

A public, unauthenticated copy of the catalog is published at
[kurrens.ai/models.json](/models.json) in the OpenRouter provider schema (v2.4).

## Precision and versions

A model id always points to the same weights at the same precision. New releases get a new id. See
[Precision & versioning](/docs/models/precision-and-versioning).

## Licenses

Each model is released by its developer under its own license. Your use of a model is subject to that license — see
[Model Licenses](/legal/model-licenses).

## Retirements

When a model is scheduled for retirement we announce it at least 30 days in advance. After the retirement date, requests
return `404 model_retired`. See [Model lifecycle](/docs/models/lifecycle) and the [Changelog](/docs/models/changelog).