LTX-2.5 Fast

Model ID

Use with the Workers AI binding, the AI Gateway REST API, or the Unified API.

Calling the provider directly? Use the provider's model name instead, including with provider-native endpoints or the provider's own SDK. For example, Anthropic's name for anthropic/claude-opus-4.8 is claude-opus-4-8.

Third-party

Lightricks LTX-2.5 Fast is a fast video generation model for text-to-video and image-to-video workflows, with synchronized audio, configurable duration, resolution, and frame rate.

Model Info
More information	link ↗
Pricing	Default (per second)$0.09 @720p (per second)$0.09 @1080p (per second)$0.15 @2k (per second)$0.19 @4k (per second)$0.37

Usage

const response = await env.AI.run(
  'lightricks/ltx-2-5-fast',
  {
    prompt: 'A cinematic aerial shot of ocean waves at sunset',
    duration: 8,
    resolution: '1920x1080',
    fps: 24,
    generate_audio: true,
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "lightricks/ltx-2-5-fast",
  "input": {
    "prompt": "A cinematic aerial shot of ocean waves at sunset",
    "duration": 8,
    "resolution": "1920x1080",
    "fps": 24,
    "generate_audio": true
  }
}'

{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/lightricks/ltx-2-5-fast/text-to-video.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Examples

Image-to-Video — Animate a reference image with a final frame

const response = await env.AI.run(
  'lightricks/ltx-2-5-fast',
  {
    prompt: 'The camera moves forward while the trees sway in the wind',
    image_uri:
      'https://upload.wikimedia.org/wikipedia/commons/8/85/Tour_Eiffel_Wikimedia_Commons_%28cropped%29.jpg',
    last_frame_uri:
      'https://upload.wikimedia.org/wikipedia/commons/8/85/Tour_Eiffel_Wikimedia_Commons_%28cropped%29.jpg',
    duration: 8,
    resolution: '1920x1080',
    fps: 24,
    generate_audio: true,
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "lightricks/ltx-2-5-fast",
  "input": {
    "prompt": "The camera moves forward while the trees sway in the wind",
    "image_uri": "https://upload.wikimedia.org/wikipedia/commons/8/85/Tour_Eiffel_Wikimedia_Commons_%28cropped%29.jpg",
    "last_frame_uri": "https://upload.wikimedia.org/wikipedia/commons/8/85/Tour_Eiffel_Wikimedia_Commons_%28cropped%29.jpg",
    "duration": 8,
    "resolution": "1920x1080",
    "fps": 24,
    "generate_audio": true
  }
}'

{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/lightricks/ltx-2-5-fast/image-to-video.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Parameters

prompt

stringrequiredminLength: 1maxLength: 10000Text prompt describing the video

image_uri

stringformat: uriHTTPS URI for the first frame

last_frame_uri

stringformat: uriHTTPS URI for the last frame

▶duration

one ofrequired

resolution

stringrequireddefault: 1920x1080enum: 1280x720, 720x1280, 1920x1080, 1080x1920, 2560x1440, 1440x2560, 3840x2160, 2160x3840

▶fps

one ofrequired

generate_audio

booleanrequireddefault: true

video

stringformat: uriURL to the generated video

API Schemas (Raw)

Input

Output