Source: https://ailoot.ai/models/en/ltx/
Canonical: https://ailoot.ai/models/en/ltx/
Language: en

# Ltx

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

## [Ltx](https://ailoot.ai/models/en/ltx/)

Video generation from text and an optional reference image, with negative\_prompt support.

- [**Ailoot Ultra · Video** `POST /v1/videos` `ltx`](https://ailoot.ai/models/en/ltx/#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.

ltx accepts a written prompt and an optional image through /v1/videos, producing video. A concrete use is animating a supplied product photograph into a concept shot while describing the desired movement in text. Choose it when a reference image is part of the intended workflow.

The accepted controls are model, prompt, image and negative\_prompt. This entry does not pin a more specific LTX edition or expose duration, resolution, frame-rate or audio settings. It therefore supports a reference-based scene request without a promise of exact clip specifications that are absent from the method. Submit once, retain the original task identifiers and collect every actual output from the completed job.

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

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

Lightricks /`ltx`

### Overview

Video generation from text and an optional reference image, with negative\_prompt support.

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 ltx Conditions: Use this exact Ailoot routing selector. | Default— |
| Field`prompt` | Type`string` | RequirementRequired | Values & limits Conditions: Describe the scene and its motion. | 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` | Contractimage, negative\_prompt |
| Parameter`material_types` | Contracttext, image |
| Parameter`conditions` | ContractUse this exact Ailoot routing selector., Describe the scene and its motion., 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 | Billing quantity | Charge |
| --- | --- | --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Forecast quantity— | Billing 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 |
| ConfigurationPer request | Rate schedule— | Forecast quantity— | Billing quantityone request | Charge Input · Estimate for comparison only **$0.1** per request |
| ConfigurationEstimated generation cost | Rate schedule— | Forecast quantityone generation estimate | Billing quantity— | Charge Output · Estimated generation cost · Estimate for comparison only **$0.1** 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": "ltx",
  "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** [`ltx`](https://ailoot.ai/models/en/#m=ltx&route=Ultra&caller=ltx&fmt=videos)

#### Method path aliases

`/v1/videos/generations`

#### Related caller IDs

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

FAQ · Ltx

What inputs and results are available?

`POST /v1/videos` · `ltx`: `text`, `image` → `video`

Which fields does the request use?

`POST /v1/videos` · `ltx`: `model`, `prompt`, `image`, `negative_prompt`

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