# Call Genesis models

Use Genesis to call model capabilities from an application. Choose the HTTP API, OpenAI SDK, or Anthropic SDK based on your existing client. All three use Genesis service endpoints and credentials; they do not use AI Studio workspace scope.

| Goal | Start here |
| --- | --- |
| Send an HTTP request and receive a model response | [Call the API](http-api.md) |
| Connect Genesis through an existing OpenAI client | [Call with the OpenAI SDK](openai-sdk.md) |
| Connect Genesis through an existing Anthropic client | [Call with the Anthropic SDK](anthropic-sdk.md) |

```{toctree}
:hidden:
:maxdepth: 1

Call the API <http-api>
Call with the OpenAI SDK <openai-sdk>
Call with the Anthropic SDK <anthropic-sdk>
```