> ## Documentation Index
> Fetch the complete documentation index at: https://docs.openhands.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenRouter

> OpenHands uses LiteLLM to make calls to chat models on OpenRouter. You can find their documentation on using OpenRouter as a provider [here](https://docs.litellm.ai/docs/providers/openrouter).

## Configuration

When running OpenHands, you'll need to set the following in the OpenHands UI through the Settings under the `LLM` tab:

* `LLM Provider` to `OpenRouter`
* `LLM Model` to the model you will be using.
  [Visit here to see a full list of OpenRouter models](https://openrouter.ai/models).
  If the model is not in the list, enable `Advanced` options, and enter it in
  `Custom Model` (e.g. openrouter/\<model-name> like `openrouter/anthropic/claude-3.5-sonnet`).
* `API Key` to your OpenRouter API key.