LTX 2.3

Pricing

$0.0423 per second

USD, charged from your prepaid balance at the listed price. List price; a few keys on special plans may differ.Failed and cancelled tasks are not charged. How billing works

What it does

720p–1080p, native audio, up to 5 s

1–5 s · 720p–1080p · native audio

Model ID

ltx-2.3

Modes

First & last frame, Image to video

Duration

1–5 s

Resolutions

720p, 1080p

Native audio

Yes

API

POST /v1/videos

Runs as an asynchronous task: create it, poll its status, then download the file. Set BIGMODEL_API_KEY to your API key first.

curl https://bigmodel.io/v1/videos \
  -H "Authorization: Bearer $BIGMODEL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: lantern-take-1" \
  -d '{
    "model": "ltx-2.3",
    "prompt": "The lantern drifts slowly to the right, mist moving over the water",
    "image": "https://example.com/lantern.png",
    "seconds": 5
  }'

# Poll until status is succeeded, then download
curl https://bigmodel.io/v1/videos/TASK_ID \
  -H "Authorization: Bearer $BIGMODEL_API_KEY"
curl -L -o video.mp4 https://bigmodel.io/v1/videos/TASK_ID/content \
  -H "Authorization: Bearer $BIGMODEL_API_KEY"

Python, Node.js, every input field and error handling are in the guide. Guide →

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