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

# HeyGen

> Avatar and presenter video — text-to-video, video-to-video, and image-to-video aimed at talking-head output..

Avatar and presenter video — text-to-video, video-to-video, and image-to-video aimed at talking-head output.

## Which one to pick

Use for a presenter or spokesperson. For syncing an existing face to audio, compare with Sync.

Every input has a tooltip in [Generate](/generate) — read those before assuming a setting exists on a given model.

## Models

**Capabilities:** text-to-video (4) · video-to-video (2) · image-to-video (1)

**Price range:** 5–22 credits per run

**7 models in Pixio.** Credits are per run unless a unit is shown.

| Model                          | Does          | Credits | Access    |
| ------------------------------ | ------------- | ------- | --------- |
| HeyGen Avatar 4 Image-to-Video | Image → video | 10      | All plans |
| HeyGen Avatar 3 Digital Twin   | Text → video  | 5       | All plans |
| HeyGen Avatar 4 Digital Twin   | Text → video  | 10      | All plans |
| HeyGen Video Agent             | Text → video  | 10      | All plans |
| HeyGen Avatar 5 Digital Twin   | Text → video  | 22      | All plans |
| HeyGen Translate Speed         | Video → video | 5       | All plans |
| HeyGen Translate Precision     | Video → video | 10      | All plans |

*Capabilities, price range, and table generated from the Pixio model catalog.*

## Credits and access

Costs are per run unless the table shows a unit. Access follows your plan — see [Credits & Plans](/credits). Models marked free on a plan run without drawing down your balance.

<Tip>
  Test at the cheapest settings the model allows before committing. For video, generate a still first and chain **Create Video** from it — see [chained actions](/generate#chained-actions).
</Tip>

## Related

* [Models](/models) — how the catalog works
* [Generate](/generate) — where you run these
* [Credits & Plans](/credits) — what things cost
* [Model status](https://beta.pixio.myapps.ai/status/models) — if one is misbehaving