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

# HeyGenVoiceTextToSpeechNode - ComfyUI Built-in Node Documentation

> Speak text in a voice cloned with HeyGen Voice 1.0 Instant Clone.

Speak text in a voice cloned with HeyGen Voice 1.0 Instant Clone. The node sends the text and the voice ID to HeyGen and returns the generated speech as audio. Two models are available: `heygen-voice-1` and the cheaper, faster `heygen-voice-1-turbo`.

Selecting a `model` reveals the parameters specific to that model.

## Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `model` | Model to use. `heygen-voice-1-turbo` is faster and costs less. Selecting a model reveals the parameters specific to it: `voice_id`, `text`, `language`, and `expressiveness_boost`. | DYNAMIC\_COMBO | Yes | `"heygen-voice-1"` `"heygen-voice-1-turbo"` |
| `voice_id` | Voice from HeyGen Voice 1.0 Instant Clone (default: empty). | STRING | Yes | N/A |
| `text` | Text to speak. Up to 5000 characters; speech longer than about 12 minutes fails, so split very long Chinese or Japanese text (default: empty). | STRING | Yes | 1 to 5000 characters |
| `language` | Language of the text. Set it for closely related languages such as Serbian or Malay, which auto-detection can confuse (default: "auto"). | COMBO | Yes | `"auto"` Multiple language presets |
| `expressiveness_boost` | Higher values are more expressive; lower values stay closer to the original voice (default: 0.5). | FLOAT | Yes | 0.0 to 1.0 (step 0.05) |

**Note:** `voice_id` must be a voice created by HeyGen Voice 1.0 Instant Clone; the node stops with an error when it is empty. `text` must contain at least one character.

## Outputs

| Output Name | Description | Data Type |
| - | - | - |
| `AUDIO` | The speech generated from the text, spoken in the cloned voice. | AUDIO |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/HeyGenVoiceTextToSpeechNode/en.md)

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