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

# LiveAvatar vs HeyGen Interactive Avatar

> Key differences between the two platforms

## Session initialization

**HeyGen** required three sequential API calls: Create Session Token → New Session → Start Session.

**LiveAvatar** simplifies this to two calls: Create Session Token → Start Session. The old token creation and session setup logic are unified.

## Session management

| HeyGen                  | LiveAvatar                       |
| ----------------------- | -------------------------------- |
| Close Session           | Stop Session                     |
| Keep Alive              | Keep Session Alive               |
| List Sessions (Active)  | List Sessions (`type` parameter) |
| List Sessions (History) | List Sessions (`type` parameter) |

## Task endpoints → Events

HeyGen's REST task endpoints are replaced by an event-driven architecture:

| HeyGen endpoint | LiveAvatar event        |
| --------------- | ----------------------- |
| `repeat`        | `avatar.speak_text`     |
| `chat`          | `avatar.speak_response` |
| `interrupt`     | `avatar.interrupt`      |

The event-driven approach improves responsiveness and reduces latency.

## Avatars and Knowledge Bases

* Avatar listing split into **List Public Avatars** and **List User Avatars**
* **Knowledge Base** renamed to **Context** (all CRUD operations updated)

## API keys

HeyGen API keys are not compatible with LiveAvatar. You need a new key from [app.liveavatar.com/developers](https://app.liveavatar.com/developers).