LTX-2.3 LoRA API

About LTX-2.3 LoRA

LTX-2.3 LoRA runs Lightricks' open 22-billion-parameter audio-video model with up to three of your own LoRA files per request, on text-to-video and image-to-video. Clips run 5 to 20 seconds at 480p, 720p or 1080p with a stereo soundtrack, LoRAs load from a Hugging Face file link or a Civitai download link, and nothing is filtered.

Call it with the model name lightricks/ltx-2.3-lora/text-to-video on POST /jobs/createTask, from 18 credits for a 5-second clip ($0.18). New accounts get 30 free credits to try it in the Playground first.

Introduction

LTX-2.3 LoRA Text to video generates a clip with its own soundtrack from a prompt, with up to three of your LoRA files loaded. It runs Lightricks' open 22-billion-parameter audio-video model; clips run 5 to 20 seconds at 480p, 720p or 1080p in 16:9 or 9:16.

Choose a mode by starting material

Key features

Style LoRAs that take over the frame

In our tests a claymation LoRA and an oil-painting LoRA each restyled the whole scene; without the files the same prompts stayed photographic.

Links from Hugging Face or Civitai

A direct Hugging Face file link and a Civitai download link both loaded, and gave the same clip for the same file.

Sound on every clip

Each clip has a stereo soundtrack generated with the picture; describe it on an "Audio:" line.

Request parameters

Pricing

Prices are in credits, the same credits you use on the website (1 credit = $0.01). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.

For an exact number before you run, send the same body to POST /jobs/quote.

Use cases

Styled series

One style LoRA, many prompts, one consistent look.

Effect shots

Community effect LoRAs showed at strength 0.5 in our tests.

Prompt guide & pro tips

Use LoRAs made for LTX-2.3

A LoRA trained for LTX-2 19B changed our clip unpredictably instead of applying its look; a Wan LoRA did nothing.

Compare against no LoRA

Style words alone already move the base model, so run the same prompt and seed with loras empty before judging a file.

Use direct, public links

Link the .safetensors file or the Civitai download, not a repository page; files behind a login fail.

API quick start

Call the LTX-2.3 LoRA API in three steps

1. Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
2. Send the request. POST /jobs/createTask with model lightricks/ltx-2.3-lora/text-to-video and an input object that follows the parameter table. The response returns a task ID straight away.
3. Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "lightricks/ltx-2.3-lora/text-to-video",
  "input": {
    "prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration_seconds": 5
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.

LTX-2.3 LoRA API questions

All LTX models

LTX-2 19B LoRA takes LoRAs trained for the older 19B model.

• LTX 2.5 APILong 20-second takes up to 4K with a soundtrackFrom 68 credits for a 5-second clip
• LTX-2.3 LoRA APILTX-2.3 clips with stereo sound and your own LoRAsFrom 18 credits for a 5-second clip
• LTX-2 19B API20-second clips with voices, music and effectsFrom 11 credits for a 5-second clip
• LTX-2 19B LoRA APILTX-2 clips with sound and your own LoRA stylesFrom 14 credits for a 5-second clip

Other video APIs

• MiniMax H3 APIExpressive clips with audio, up to 2KFrom 28 credits for a 5-second clip
• MiniMax H3 Singularity LoRA APICommunity-tuned H3 video that loads your own LoRAsFrom 45 credits for a 5-second clip
• MiniMax H3 LoRA APIMiniMax H3 video with sound and up to three of your LoRAsFrom 38 credits for a 5-second clip
• Wan 2.2 LoRA APIWan 2.2 video with your LoRAs on either expert passFrom 18 credits for a 5-second clip
• Wan 2.2 5B LoRA APILight 720p Wan 2.2 clips that load your own LoRAsFrom 18 credits per run
• Wan 2.1 LoRA APIWan 2.1 video and edits with your own LoRAs, camera moves includedFrom 36 credits per run

More about LTX-2.3 LoRA

Try it

LTX-2.3 LoRA AI Video Generator onlineCreate videos with LTX-2.3 LoRA in PopNow

Docs

LTX-2.3 LoRA model ID and input schema in the API docsPopNow API quickstart: your first request in five minutesImage to video guide for the PopNow APIWebhooks: get LTX-2.3 LoRA results without polling