# HeyGen Avatar 5 Digital Twin API

> Avatar5 Digital Twin by HeyGen - generate cinematic videos from text descriptions with AI. Create high-quality video content with natural motion, camera control, and optional audio generation.

Source: https://www.sandbase.ai/models/heygen/avatar5/digital-twin
API reference: https://www.sandbase.ai/models/heygen/avatar5/digital-twin/docs

## Facts

- Provider: HeyGen
- Type: Video model
- Model ID: `heygen/avatar5/digital-twin`
- Price: From $0.60 per run
- Capabilities: text to video
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Unified Run API: `POST https://api.sandbase.ai/v1/run`

```bash
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "heygen/avatar5/digital-twin",
  "fit": "cover",
  "voice": "Warm Pro Narrator",
  "avatar": "Abigail Office Front",
  "prompt": "Hello and welcome to this demonstration of HeyGen Avatar V.",
  "caption": false,
  "resolution": "720p",
  "output_format": "mp4",
  "remove_background": false
}'
```

The response returns a run id; poll `GET https://api.sandbase.ai/v1/run/{id}` until the status is `completed` or `failed`.

## FAQ

### How do I call HeyGen Avatar 5 Digital Twin through SandBase?

Create a SandBase API key, then send requests with the model ID "heygen/avatar5/digital-twin" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

### Do I need a separate HeyGen account?

No. One SandBase API key and balance gives you access to HeyGen Avatar 5 Digital Twin and the other models in the catalog; you do not need to sign up with HeyGen separately.

## README

### HeyGen Avatar 5 Digital Twin

HeyGen Avatar 5 Digital Twin: a presenter video from a script or audio track, using a stock or custom avatar, up to 4K, with optional captions and background removal.

#### Fields

| Field | Type | Default | Notes |
|---|---|---|---|
| `prompt` | string, required | — | Script to speak, or direction when `audio` is supplied. |
| `aspect_ratio` | `16:9` / `9:16` / `5:4` / `4:5` / `1:1` | — | Output frame shape. |
| `audio` | audio URL | — | Optional voice track; otherwise the script is voiced with `voice`. |
| `resolution` | `720p` / `1080p` / `4k` | `720p` | Output resolution. |
| `output_format` | `mp4` / `webm` | `mp4` | Output file format. |
| `remove_background` | boolean | false | Transparent background (WebM). |
| `avatar` | string | `Abigail Sofa Front` | Avatar to use. |
| `voice` | `Warm Pro Narrator` / `Chill Brian` / `Ivy` / `John Doe` / `Monika Sogam` / `Hope ` / `Archer ` / `Brittney` / `Patrick` / `David Castlemore` / `Michael C` / `Adam Stone ` / `Juniper` / `Cassidy ` / `Jessica Anne Bogart` / `Arabella` / `Andrew` / `Spuds Oxley ` / `Grace Elder` / `Helen` / `Canyon Rivers` / `Derya - Lifelike - Excited 🤩` / `Mellow Marcus` / `Jack Sterling - Broadcaster 🎙️` / `Brenda - UGC - 1.mp4` / `Reid` / `Reagan` / `Terry` / `Jenny` / `Radio Rick` / `Denise` / `Tim in car - Excited 🤩` / `Iskander` / `Thompson` / `Delicate Daisy - Excited 🤩` / `Kingston` / `George UGC 1` / `Bold Blake` / `Jane` / `Expressive Evan` / `Marianne - IA` / `Aaron` / `Modern Recipe Host - Voice 1` / `Willow` / `Cute Chloe - Friendly 😊` / `Rafael` / `June - Lifelike` / `Crisp Chloe` / `Slick Simon` / `Nassim - Informative` / `Baritone Ben` / `Maxwell` / `Ellie Faye - Excited 🤩` / `Milani` / `Feisty Fiona - Excited 🤩` / `Professor Dean` / `Rose - UGC - 1.mp4` / `Shona` / `Hudson Wilder` / `Ann - IA` / `Alastair Kensington` / `Oxley` / `Christina` / `Andrew Rizz ` / `Peyton` / `Gerardo - Outdoor` / `Chloe - Lifelike` / `Stephanie` / `Anthony - IA` / `Signal - Voice 1` / `Luca` / `Lisa - Voice 1` / `T.W.Tucker` / `Jack Sullivan - Serious 😐` / `Winter` / `Mireia - Lifelike` / `Georgia` / `Stella` / `Masha - Lifelike` / `Charming Charles - Friendly 😊` / `Serenity` / `Annie - Excited` / `Ralph` / `Bethany` / `Dominic` / `Mason Finn` / `Leena` / `Veteran Victor` / `Tamara` / `Nik Public` / `Calm Chloe` / `Sevik` / `Reilly` / `Raul` / `Imposing Ian` / `Relaxed Ray` / `Dexter - Professional` / `Relaxed Rick` / `Edwin` / `Rupert Blackwood` / `Ginny` / `Hope` | `Warm Pro Narrator` | Voice for the script. |
| `caption` | boolean | false | Burn in captions. |
| `watermark` | string | — | Optional watermark image URL to overlay on the output video. |
| `fit` | `contain` / `cover` | `cover` | How the avatar fills the frame. |

#### Billing

$0.12 per output second; length follows the audio or the spoken script. The quote before submission assumes 5 seconds.

| Output | Price |
|---|---|
| 5s | $0.60 |
| 30s | $3.60 |
| 60s | $7.20 |

Failed runs are not charged.

#### Also on SandBase

Related: `heygen/heygen-avatar4/image-to-video` (from your own photo).