Heygen Avatar Iv
heygen-avatar-iv
Pricing
heygen-avatar-iv per second
| Unit Price | $0.150 |
|---|
Introduction coming soon
A detailed guide for this model is being prepared. Pricing, parameters and the API docs below are already available.
Create a generation task
https://api.hiapi.ai/v1/tasks Headers
AuthorizationstringRequiredAccount API key. Required on every request. Example: Bearer YOUR_HIAPI_API_KEY. Get your API key
Content-TypestringOptionalThe request body is always parsed as JSON; when sent, only application/json (optionally with charset) is accepted — any other value returns 415. Example: application/json.
Idempotency-KeystringOptionalIdempotency key, up to 255 bytes. Retries with the same key from the same account create the task only once; replays return the original taskId.
On network timeouts or client retries, the same key creates the task only once — no double charges (scope: the API key's account). Use a business-unique identifier as the key (e.g. "order-42"); replays return the original taskId, and keys expire 24 hours after the first request. See the Unified Async API overview for the full scenario matrix.
Body
modelstringRequiredCurrent fixed value: heygen-avatar-iv
routestringOptionalCurrent fixed value: default
inputobjectRequired
Business parameters for heygen-avatar-iv and route default — see the parameter table below.
voicestringOptionalDefault: "Warm Pro Narrator"minLength 1Voice used to speak the script. Ignored when audio_url is present.
Warm Pro NarratorChill BrianIvyJohn DoeMonika SogamHope Archer BrittneyShow all (94)
PatrickDavid CastlemoreMichael CAdam Stone JuniperCassidy Jessica Anne BogartArabellaAndrewSpuds Oxley Grace ElderHelenCanyon RiversDerya - Lifelike - ExcitedMellow MarcusJack Sterling - BroadcasterBrenda - UGC - 1.mp4ReidReaganTerryJennyRadio RickDeniseTim in car - ExcitedIskanderThompsonDelicate Daisy - ExcitedKingstonGeorge UGC 1Bold BlakeJaneExpressive EvanMarianne - IAAaronModern Recipe Host - Voice 1WillowCute Chloe - FriendlyRafaelJune - LifelikeCrisp ChloeSlick SimonNassim - InformativeBaritone BenMaxwellEllie Faye - ExcitedMilaniFeisty Fiona - ExcitedProfessor DeanRose - UGC - 1.mp4ShonaHudson WilderAnn - IAAlastair KensingtonOxleyChristinaAndrew Rizz PeytonGerardo - OutdoorChloe - LifelikeStephanieAnthony - IASignal - Voice 1LucaLisa - Voice 1T.W.TuckerJack Sullivan - SeriousWinterMireia - LifelikeGeorgiaStellaMasha - LifelikeCharming Charles - FriendlySerenityAnnie - ExcitedRalphBethanyDominicMason FinnLeenaVeteran VictorTamaraNik PublicCalm ChloeSevikReillyRaulImposing IanRelaxed RayDexter - ProfessionalRelaxed RickEdwinRupert BlackwoodGinnyHopepromptstringOptionalminLength 1maxLength 5000Text the avatar will speak. Required when audio_url is absent.
audio_urlstringOptionalpattern ^https://HTTPS audio URL for lip-sync, at most 600 seconds. When present, prompt and voice are ignored.
image_urlstringRequiredpattern ^https://HTTPS URL of the photo to animate. It must contain one clear, front-facing face. jpg, jpeg, png, webp, gif, avif, heic, heif.
backgroundobjectOptional
Fills the frame area not covered by the portrait when the output aspect ratio differs from the photo. color takes a #RRGGBB hex value; image takes an HTTPS image URL. Defaults to white.
typestringRequiredcolorimagevaluestringRequiredminLength 1resolutionstringOptionalDefault: "720p"720p1080paspect_ratiostringOptionalDefault: "16:9"auto keeps the source photo ratio when it can be read, otherwise 16:9.
16:99:164:55:41:1autocallbackobjectOptional
Terminal-state notification config. When omitted, no callback is delivered — poll the task yourself. See the callback note below.
Provide callback.url when creating a task and HiAPI POSTs to your service once the task reaches a terminal state — no polling needed. The callback payload mirrors the task detail structure; signature verification, delivery retries and idempotency are documented on the Unified Async API overview page.
urlstringRequiredRequired when callback is present. A POST is sent to this URL once the task reaches a terminal state; must be a valid http(s) URL.
whenstringOptionalDefault: "final"Only final is supported today — notified on both success and fail.
finalstoragestringOptionalDefault: "temp"Artifact storage tier: temp (default, retained about 7 days) or persistent (long-term, billed by size). Insufficient balance or exceeding the storage cap silently downgrades to temp; the effective tier is shown in the task detail response.
temppersistentRequest examples
# Submit an async task; returns a taskId immediately (no waiting for generation)
curl -X POST "https://api.hiapi.ai/v1/tasks" \
-H "Authorization: Bearer $HIAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "heygen-avatar-iv",
"input": {
"voice": "Warm Pro Narrator",
"image_url": "…",
"resolution": "720p",
"aspect_ratio": "16:9"
}
}'const res = await fetch("https://api.hiapi.ai/v1/tasks", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.HIAPI_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "heygen-avatar-iv",
input: {
"voice": "Warm Pro Narrator",
"image_url": "…",
"resolution": "720p",
"aspect_ratio": "16:9"
}
}),
});
const task = await res.json();
// { code: 200, message: "success", data: { taskId } }import os, requests
res = requests.post(
"https://api.hiapi.ai/v1/tasks",
headers={"Authorization": f"Bearer {os.environ['HIAPI_API_KEY']}"},
json={
"model": "heygen-avatar-iv",
"input": {
"voice": "Warm Pro Narrator",
"image_url": "…",
"resolution": "720p",
"aspect_ratio": "16:9"
}
},
)
print(res.json()) # { code, message, data: { taskId } }200 OK
{
"code": 200,
"message": "success",
"data": {
"taskId": "tk-hiapi-01HZTQ8BX2N3GM3YFK4Z9D7VQR"
}
}400 Bad Request
{
"code": 400,
"message": "invalid request",
"data": null,
"error_code": "INVALID_REQUEST"
}Get task detail
https://api.hiapi.ai/v1/tasks/:id Response fields
taskIdstringRequiredTask ID, always prefixed with tk-hiapi-.
modelstringRequiredResolved full model name. Tasks submitted with the route parameter return base@route (e.g. gpt-image-2/text-to-image@ext); otherwise identical to the name passed at creation.
routestringOptionalPresent only when the task was submitted with an explicit route parameter; echoes the submitted value.
statusstringRequiredTask status.
queued Queued, not started yet.
handling Being processed.
archiving Processing finished, artifacts being prepared.
success Terminal: completed, artifacts available (output returned).
fail Terminal: failed (error returned).
After submission, check status: success and fail are terminal, everything else is non-terminal. Poll every 1–3 seconds until terminal. On success, download artifacts from output[].url and transfer them before expireAt; pass storage: "persistent" at creation time when long-term retention is needed.
creatednumberRequiredTask creation time (Unix seconds).
completednumberRequiredUnix seconds when the task reached a terminal state; fixed to 0 while not terminal.
outputarrayOptional
Present only when status == success. Artifact list — always an array; a single task may return multiple types at once (e.g. video + first_frame).
Array [ object ]
Array items
urlstringRequiredArtifact URL, directly downloadable.
typestringRequiredCurrent possible values: video, image, audio, first_frame, last_frame, thumbnail; more may be added later.
expireAtnumberRequiredUnix seconds until which the artifact remains accessible; download or transfer before it expires.
errorobjectOptional
Present only when status == fail.
codestringRequiredBusiness error code.
messagestringRequiredError description.
Response examples
Success
{
"code": 200,
"message": "success",
"data": {
"taskId": "tk-hiapi-01HZTQ8BX2N3GM3YFK4Z9D7VQR",
"model": "happyhorse-1-0",
"status": "success",
"created": 1777282033,
"completed": 1777282099,
"output": [
{
"url": "https://cdn.hiapi.ai/tasks/.../video.mp4",
"type": "video",
"expireAt": 1777886899
}
]
}
}Processing (non-terminal)
{
"code": 200,
"message": "success",
"data": {
"taskId": "tk-hiapi-...",
"model": "happyhorse-1-0",
"status": "archiving",
"created": 1777282033,
"completed": 0
}
}Failed
{
"code": 200,
"message": "success",
"data": {
"taskId": "tk-hiapi-...",
"model": "happyhorse-1-0",
"status": "fail",
"created": 1777282033,
"completed": 1777282099,
"error": {
"code": "TASK_FAILED",
"message": "task failed"
}
}
}