# Google Gemini/Vertex LLM

OpenHands uses LiteLLM for completion calls. The following resources are relevant for using OpenHands with Google's LLMs:

- [Gemini - Google AI Studio](https://docs.litellm.ai/docs/providers/gemini)
- [VertexAI - Google Cloud Platform](https://docs.litellm.ai/docs/providers/vertex)

## Gemini - Google AI Studio Configs

When running OpenHands, you'll need to set the following in the OpenHands UI through the Settings:
* `LLM Provider` to `Gemini`
* `LLM Model` to the model you will be using.
If the model is not in the list, toggle `Advanced Options`, and enter it in `Custom Model` (i.e. gemini/<model-name>).
* `API Key`

## VertexAI - Google Cloud Platform Configs

To use Vertex AI through Google Cloud Platform when running OpenHands, you'll need to set the following environment
variables using `-e` in the [docker run command](/modules/usage/getting-started#installation):

```
GOOGLE_APPLICATION_CREDENTIALS="<json-dump-of-gcp-service-account-json>"
VERTEXAI_PROJECT="<your-gcp-project-id>"
VERTEXAI_LOCATION="<your-gcp-location>"
```

Then set the following in the OpenHands UI through the Settings:
* `LLM Provider` to `VertexAI`
* `LLM Model` to the model you will be using.
If the model is not in the list, toggle `Advanced Options`, and enter it in `Custom Model` (i.e. vertex_ai/&lt;model-name&gt;).