# HeyGen: Avatar IV

Provider: OpenRouter
Final price: $1.500001/success
Success rate: 99.7%

HeyGen: Avatar IV is an image-to-video model that animates a single photo into an expressive, lip-synced talking-head video. Rather than only matching mouth shapes to words, it interprets the vocal...

## Parameters

- model (string, required)
- prompt (string, required)
- duration (integer, optional)
- provider (object, optional)
- resolution (string, optional)
- aspect_ratio (string, optional)
- generate_audio (boolean, optional)
- input_references (array, required)

## Example

```curl
curl -X POST 'https://toolswitch.dev/v1/tools/openrouter.x.heygen-avatar-iv' \
  -H "X-Toolswitch-Key: $TOOLSWITCH_KEY"
```

[View on Toolswitch](https://toolswitch.dev/ja/tools/openrouter.x.heygen-avatar-iv)