Source: https://ailoot.ai/models/en/pixverse-v4/
Canonical: https://ailoot.ai/models/en/pixverse-v4/
Language: en

# PixVerse v4

[Markdown](https://ailoot.ai/models/en/pixverse-v4/index.md) · [JSON](https://ailoot.ai/models/en/pixverse-v4/facts.json)

## [PixVerse v4](https://ailoot.ai/models/en/pixverse-v4/)

Text/image-to-video with 5/8-second duration, five aspect ratios and 360p–1080p quality choices.

- [**Ailoot Ultra · Video** `POST /v1/videos` `pixverse-v4`](https://ailoot.ai/models/en/pixverse-v4/#method-0)

About the model

This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below.

pixverse-v4 accepts text and an optional reference image for video generation. Its aspect\_ratio choices are 16:9, 4:3, 1:1, 3:4 and 9:16; quality accepts 360p, 540p, 720p or 1080p. Duration is 5 or 8 seconds. A concrete use is preparing a vertical product shot from a reference image for a short social edit.

The /v1/videos method also lists motion\_mode as normal or fast, along with negative\_prompt and an optional end\_image. Lip-sync fields are separately named controls and should follow their method definitions rather than an assumed generic audio-upload workflow. Select the combinations supported by the chosen request. Collect the original job and every actual output; fast is a motion-mode value, not a measured generation-time guarantee.

**Ailoot Ultra · Video** `POST /v1/videos` `pixverse-v4`

[`pixverse-v4`](https://ailoot.ai/models/en/#m=pixverse-v4&route=Ultra&caller=pixverse-v4&fmt=videos)

PixVerse /`pixverse-v4`

### Overview

Text/image-to-video with 5/8-second duration, five aspect ratios and 360p–1080p quality choices.

Accepted inputs

Text · Images

Results

Video

### Available in Ailoot · inputs & methods

**Ailoot Ultra · Video** `POST /v1/videos`

Input types

`text`, `image`

Output types

`video`

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits pixverse-v4 Conditions: Use this exact Ailoot routing selector. | Default— |
| Field`prompt` | Type`string` | RequirementRequired | Values & limits Conditions: Describe the scene and its motion. | Default— |
| Field`aspect_ratio` | Type`string` | RequirementOptional | Values & limits 16:9, 4:3, 1:1, 3:4, 9:16 Conditions: Use a listed selected-model aspect ratio. | Default— |
| Field`quality` | Type`string` | RequirementOptional | Values & limits 360p, 540p, 720p, 1080p Conditions: Use the listed selected-model quality value. | Default— |
| Field`motion_mode` | Type`string` | RequirementOptional | Values & limits normal, fast Conditions: Use the listed selected-model motion mode. | Default— |
| Field`duration` | Type`integer` | RequirementOptional | Values & limits 5, 8 Conditions: Use a listed duration; no unstated default. | Default— |
| Field`end_image` | Type`string` | RequirementOptional | Values & limits Conditions: An optional end frame selects a supported image mode. | Default— |
| Field`lip_sync_tts_content` | Type`string` | RequirementOptional | Values & limits Conditions: Optional selected-model speech content. | Default— |
| Field`lip_sync_tts_speaker_id` | Type`string` | RequirementOptional | Values & limits Conditions: Use an actual provider-supported voice ID; no voice ID is invented. | Default— |
| Field`image` | Type`string or array<string>` | RequirementOptional | Values & limits Conditions: Use your actual publicly reachable image URL or base64 image; the selected model supports image input. | Default— |
| Field`negative_prompt` | Type`string` | RequirementOptional | Values & limits Conditions: Describe content to avoid. | Default— |

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`content_type` | Contractapplication/json |
| Parameter`required` | Contractmodel, prompt |
| Parameter`optional` | Contractaspect\_ratio, quality, motion\_mode, duration, end\_image, lip\_sync\_tts\_content, lip\_sync\_tts\_speaker\_id, image, negative\_prompt |
| Parameter`material_types` | Contracttext, image |
| Parameter`conditions` | ContractUse this exact Ailoot routing selector., Describe the scene and its motion., Use a listed selected-model aspect ratio., Use the listed selected-model quality value., Use the listed selected-model motion mode., Use a listed duration; no unstated default., An optional end frame selects a supported image mode., Optional selected-model speech content., Use an actual provider-supported voice ID; no voice ID is invented., Use your actual publicly reachable image URL or base64 image; the selected model supports image input., Describe content to avoid. |

Method aliases: `/v1/videos/generations`

Lifecycle: `submit_once_poll_original`

`GET /v1/videos/{request_id}`

`GET /v1/videos/generations/{request_id}`

`GET /v1/videos/{request_id}/content`

`GET /v1/media/assets`

`GET /v1/media/assets/{asset_id}`

### Pricing

##### How the final charge is calculated

The displayed rates estimate the cost before generation. The final charge is calculated from the cost recorded for the original generation. Measured output duration and forecast quantities are not the final billable quantity.

Tariff references do not add request options. Supported parameters are listed for the selected method.

Fast mode

Not specified When fast mode is selected

Flex mode

Not specified When flex mode is selected

Maximum reasoning effort

Not specified When maximum reasoning effort uses the default adjustment

#### Estimated rates for comparison

#### Prices by configuration

Match each charge to the conditions shown. Use one rate for each set of alternative configurations.

| Configuration | Rate schedule | Forecast quantity | Charge |
| --- | --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Forecast quantity— | Charge Input · Input tokens · Estimate for comparison only **—** / 1K tokens Output · Output tokens · Estimate for comparison only **—** / 1K tokens Input · Cache read · Estimate for comparison only **—** / 1K tokens Input · Cache write · Estimate for comparison only **—** / 1K tokens Input · Cache write, 1 hour · Estimate for comparison only **—** / 1K tokens |
| ConfigurationEstimated generation cost | Rate schedule— | Forecast quantityone generation estimate | Charge Output · Estimated generation cost · Estimate for comparison only **$0.2** estimate before generation This estimate is not an additional charge or a fixed rate for the completed generation. |

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

### Example requests

#### Ailoot Ultra · Video

curl · create once and retain receiptRead the original taskSave every completed owned asset

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
cat > request.json <<'JSON'
{
  "model": "pixverse-v4",
  "prompt": "A cat is walking on grass."
}
JSON
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/videos \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
# Create once; retain id, polling_url, original task identifiers and every header.
```

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
export AILOOT_API_KEY
python3 - <<'PY_STATUS'
import json,os,subprocess
from pathlib import Path
from urllib.parse import urljoin,urlsplit
r=json.loads(Path("result.json").read_text())
u=urljoin("https://api.ailoot.ai",r["polling_url"])
p=urlsplit(u)
if p.scheme!="https" or p.netloc!="api.ailoot.ai" or p.username or p.password:
    raise SystemExit("Unexpected returned polling URL; preserve the response")
subprocess.run(["curl","--fail-with-body","--silent","--show-error",u,"-H","Authorization: Bearer "+os.environ["AILOOT_API_KEY"],"-D","status-headers.txt","-o","status.json"],check=True)
# Read this same original polling_url again while pending.
# Preserve unknown/result_pending_check; do not repeat creation.
PY_STATUS
```

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
export AILOOT_API_KEY
python3 - <<'PY_ASSETS'
import json,os,subprocess
from pathlib import Path
from urllib.parse import urljoin,urlsplit
r=json.loads(Path("status.json").read_text())
roles={}
def visit(v,path=""):
    if isinstance(v,dict):
        for k,x in v.items(): visit(x,path+"/"+k)
    elif isinstance(v,list):
        for i,x in enumerate(v): visit(x,path+"/"+str(i))
    elif isinstance(v,str):
        u=urljoin("https://api.ailoot.ai",v); p=urlsplit(u)
        if p.scheme=="https" and p.netloc=="api.ailoot.ai" and not p.username and not p.password and p.path.startswith("/v1/media/assets/") and p.path.endswith("/content"):
            roles.setdefault(u,[]).append(path)
visit(r)
if not roles: raise SystemExit("No completed owned assets; retain the original status")
manifest=[]
for i,(u,paths) in enumerate(roles.items()):
    target=Path(f"asset-{i}.bin")
    subprocess.run(["curl","--fail-with-body","--silent","--show-error",u,"-H","Authorization: Bearer "+os.environ["AILOOT_API_KEY"],"-o",str(target)],check=True)
    raw=target.read_bytes()
    if not raw: raise SystemExit("Empty asset; retain original status and metadata")
    ext="glb" if raw[:4]==b"glTF" else "png" if raw[:8]==b"\x89PNG\r\n\x1a\n" else "jpg" if raw[:3]==b"\xff\xd8\xff" else "webp" if raw[:4]==b"RIFF" and raw[8:12]==b"WEBP" else "mp4" if raw[4:8]==b"ftyp" else "bin"
    name=f"asset-{i}.{ext}"
    if target.name!=name: target.rename(name)
    manifest.append({"file":name,"response_paths":paths,"bytes":len(raw)})
Path("asset-manifest.json").write_text(json.dumps(manifest,indent=2))
print("Saved",len(manifest),"unique owned assets; every response role retained")
PY_ASSETS
```

### Receive and save results

#### Ailoot Ultra · Video

- `GET /v1/videos/{request_id}`
- `GET /v1/videos/generations/{request_id}`
- `GET /v1/videos/{request_id}/content`
- `GET /v1/media/assets`
- `GET /v1/media/assets/{asset_id}`

##### Keep all completed results

Save every completed video or returned file; retrieve every actual returned asset URL.

Retain the complete response and headers, original identifiers, every actual output and all usage/accounting fields. Save each unique owned asset and retain every role pointing to it.

##### If the original response needs checking

Keep the returned public task or operation id and all headers. Read only the original task; unknown or result\_pending\_check does not authorize another creation.

Response fields

| Field | Type |
| --- | --- |
| Field`id` | Typestring |
| Field`polling_url` | Typestring |
| Field`provider_task_id` | Typestring |
| Field`task_id` | Typestring |
| Field`status` | Typestring |
| Field`video_url` | Typestring |

### Aliases

#### Model aliases

**Ailoot Ultra** [`pixverse-v4`](https://ailoot.ai/models/en/#m=pixverse-v4&route=Ultra&caller=pixverse-v4&fmt=videos)

#### Method path aliases

`/v1/videos/generations`

#### Related caller IDs

[`pixverse-v4`](https://ailoot.ai/models/en/#m=pixverse-v4&route=Ultra&caller=pixverse-v4&fmt=videos)

FAQ · PixVerse v4

What inputs and results are available?

`POST /v1/videos` · `pixverse-v4`: `text`, `image` → `video`

Which fields does the request use?

`POST /v1/videos` · `pixverse-v4`: `model`, `prompt`, `aspect_ratio`, `quality`, `motion_mode`, `duration`, `end_image`, `lip_sync_tts_content`, `lip_sync_tts_speaker_id`, `image`, `negative_prompt`

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