LTX-2.3 API

Lightricks LTX-2.3 image-to-video at up to 4K, with an optional end frame and synchronized native audio

Endpoint

POST https://api.hedra.com/v3/models/ltx-2-3

Example request

curl -X POST "https://api.hedra.com/v3/models/ltx-2-3" \
  -H "Authorization: Key $HEDRA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"input": {"prompt": "a cinematic shot of a city at dusk"}}'

Parameters

num_outputsinteger

Number of outputs generated per job. Only 1 is supported.

promptstringrequired

Generation prompt. From 1 to 5000 characters.

resolutionstringrequired

Output resolution.

generate_audioboolean

Whether to generate native audio for the video.

duration_msintegerrequired

Duration in ms.

aspect_ratiostringrequired

Output aspect ratio.

start_image

Start frame (image-to-video). At most 10.4 MB.

end_image

End frame (first-last-frame-to-video). At most 10.4 MB.

qualitystringrequired

Quality level to generate at.