fitstring
How the avatar fits within the output frame. 'contain' keeps the full avatar in view (may letterbox); 'cover' fills the frame (may crop).
Default: "cover"
Possible values: "contain", "cover"
HeyGen Avatar 5 Digital Twin
heygen/avatar5/digital-twinAvatar5 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.
Try the model
Playground
Input
Text the avatar will speak. Required when ``audio_url`` is not provided.
Additional Settings More
Customize your input with more control.
Output aspect ratio. Omit to keep the source aspect ratio (falls back to 16:9 when it cannot be read). Allowed values: 16:9, 9:16, 5:4, 4:5, 1:1.
HTTP(S) URL of an audio file for the avatar to lip-sync to. When provided, the avatar uses this audio instead of text-to-speech and ``prompt``/``voice`` are ignored.
Output resolution preset. Allowed values: 720p, 1080p, 4k.
Output container format. 'webm' produces a transparent video (automatically removes the background) and ignores the ``background`` field. Allowed values: mp4, webm.
Remove the avatar's background. Requires a matting-enabled avatar.
Name of the Avatar V-eligible avatar to use.
Name of the text-to-speech voice to use for the avatar when ``audio_url`` is not provided. Allowed values: 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.
Generate a sidecar SRT caption file alongside the video.
Optional watermark image URL to overlay on the output video.
How the avatar fits within the output frame. 'contain' keeps the full avatar in view (may letterbox); 'cover' fills the frame (may crop). Allowed values: contain, cover.
ResultExample
What would you like to do next?
Examples
Select an example to load its inputs and result into the playground.
- Open result ↗
Input
{ "prompt": "Hello and welcome to this demonstration of HeyGen Avatar V." }
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 | $7.20 |
Failed runs are not charged.
Also on SandBase
Related: heygen/heygen-avatar4/image-to-video (from your own photo).
Start building
Send your first request
Submit this model through the SandBase Unified Run API.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"model": "heygen/avatar5/digital-twin",
"fit": "cover",
"voice": "Warm Pro Narrator",
"avatar": "Abigail Office Front",
"prompt": "Hello and welcome to this demonstration of HeyGen Avatar V.",
"caption": false,
"resolution": "720p",
"output_format": "mp4",
"remove_background": false
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
status=$(printf '%s' "$result" | jq -r .status)
case "$status" in completed|failed|timeout) break ;; esac
sleep 2
result=$(curl --fail-with-body --silent \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
"https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"2. Authentication
Create a SandBase API key and set it in your server environment. All requests use Bearer authentication.
export SANDBASE_API_KEY="YOUR_API_KEY"Keep the key on your server. Do not expose it in browser code or commit it to a repository.
3. Queue
Submit a request
POST to /v1/run with this model ID and its inputs. The request example above includes submission and polling.
Fetch request status and result
Use the returned run ID to poll until the status is completed, failed or timeout. Read output only after completed.
curl "https://api.sandbase.ai/v1/run/$RUN_ID" \
-H "Authorization: Bearer $SANDBASE_API_KEY"4. Files
Hosted files
Pass a publicly accessible file URL in the model’s image, video or audio field. Supported formats and limits are shown beside each Playground input.
Uploading images
Use the upload or replace control on supported image fields in the Playground. Video URL fields accept a hosted driving video; they do not imply video-upload support.
5. Schema
Input
audiostring
HTTP(S) URL of an audio file for the avatar to lip-sync to. When provided, the avatar uses this audio instead of text-to-speech and ``prompt``/``voice`` are ignored.
voicestring
Name of the text-to-speech voice to use for the avatar when ``audio_url`` is not provided.
Default: "Warm Pro Narrator"
Possible values: "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"
avatarstring
Name of the Avatar V-eligible avatar to use.
Default: "Abigail Sofa Front"
promptstringrequired
Text the avatar will speak. Required when ``audio_url`` is not provided.
captionboolean
Generate a sidecar SRT caption file alongside the video.
Default: false
watermarkstring
Optional watermark image URL to overlay on the output video.
resolutionstring
Output resolution preset.
Default: "720p"
Possible values: "720p", "1080p", "4k"
aspect_ratiostring
Output aspect ratio. Omit to keep the source aspect ratio (falls back to 16:9 when it cannot be read).
Possible values: "16:9", "9:16", "5:4", "4:5", "1:1"
output_formatstring
Output container format. 'webm' produces a transparent video (automatically removes the background) and ignores the ``background`` field.
Default: "mp4"
Possible values: "mp4", "webm"
remove_backgroundboolean
Remove the avatar's background. Requires a matting-enabled avatar.
Default: false
{
"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
}Output
A completed run exposes its result in output. The following is the model’s saved example, not a new generation.
[
{
"poster": "https://static.sandbase.ai/examples/posters/10e8eb713334bb44a0c8.jpg",
"source": "heygen schema mirror",
"source_url": "https://heygen.example/",
"url": "https://static.sandbase.ai/examples/e98b9898-2357-4762-bf63-9737322f65f8/output/ea28ec0a-4829-4b08-82f6-0b6576e51411.mp4"
}
]