LTX 2.3 Fast Image to Video

Name: Lightricks LTX 2.3 Fast Image to Video
Price: 0.36 USD
Availability: InStock
Author: Lightricks

lightricks/ltx-2.3-fast/image-to-video

Ltx 2.3 Fast is Lightricks's image-to-video AI model. Bring static images to life with fluid animation, consistent character motion, and professional-grade video output.

Try the model

Playground

Open playground

Input

Prompt(string)

The prompt to generate the video from

Start Image URL(string)

Upload

PNG, JPEG, WebP, or GIF · 20 MiB maximum

URL of the image to generate the video from. Must be publicly accessible or base64 data URI. Supports PNG, JPEG, WebP, AVIF, and HEIF formats.

This field is required.

Additional Settings More

Customize your input with more control.

End Image URL(string)

Upload

PNG, JPEG, WebP, or GIF · 20 MiB maximum

The URL of the end image to use for the generated video. When provided, generates a transition video between start and end frames.

Resolution(string)

The resolution of the generated video Allowed values: 1080p, 1440p, 2160p.

Duration(integer)

The duration of the generated video in seconds. The fast model supports 6-20 seconds. Note: Durations longer than 10 seconds (12, 14, 16, 18, 20) are only supported with 25 FPS and 1080p resolution. Allowed values: 6, 8, 10, 12, 14, 16, 18, 20.

Generate Audio(boolean)

Whether to generate audio for the generated video

Aspect Ratio(string)

Output aspect ratio. Omit to match the input image. Allowed values: 16:9, 9:16.

Result

Example

What would you like to do next?
Open original

Examples

Select an example to load its inputs and result into the playground.

Input

{
  "image": "https://static.sandbase.ai/examples/78072a01-7219-4993-a8f3-089836e6ad15/input/cc432447-c109-463d-a28b-0e4b21c66923.png",
  "prompt": "Snorkel lens ground-scraping tracking shot following a barefoot Ethiopian long-distance runner training on a dirt road at dawn, camera inches from the ground racing alongside, her feet kicking up red dust in slow motion at 240fps, Rift Valley landscape blurred in the background, the texture of earth and callused skin in hyper-detail, 40mm snorkel lens at ground height, Nike Running documentary meets Lubezki natural light, the poetry of human endurance"
}

Open result ↗

Human preference

Arena

Elo ratings from blind side-by-side votes, compared with other image and video models.

Rankings sourced from Artificial Analysis Arena

Leaderboard: Image to Video
Rank: #28 of 29
Elo: 822 ±20
Gap to #1: −308

Image-to-video arena (silent): people pick the better of two clips animated from the same image, without seeing the model names; audio is not judged.

#20Veo 3.1 LiteGoogleOn SandBase924±19
#21LTX-2.5 FastLightricks915±20
#22Vidu Q3 ProViduOn SandBase915±19
#23LTX-2.5 ProLightricks906±19
#24Runway Gen-4.5 (720p)Runway902±20
#25Kling O1 Pro (January)KlingAI868±20
#26Pika 2.5Pika Art852±20
#27MAGI-2 PreviewSand.ai845±20
#28LTX-2.3 FastLightricksThis model822±20
#29LTX-2.3 ProLightricksOn SandBase808±21

LTX 2.3 Fast Image to Video

LTX 2.3 Fast image to video: up to 20 second clips with native audio at 1080p, 1440p, or 4K (2160p). image is the first frame; end_image optionally the last.

Fields

Field	Type	Default	Notes
`prompt`	string, required	—	Up to 5,000 characters.
`image`	image URL, required	—	First frame. JPEG, PNG, or WebP URL.
`end_image`	image URL	—	Optional last frame.
`resolution`	`1080p` / `1440p` / `2160p`	`1080p`	Sets the per-second rate.
`duration`	6 / 8 / 10 / 12 / 14 / 16 / 18 / 20	6	Output length in seconds.
`generate_audio`	boolean	true	Native audio.
`aspect_ratio`	`16:9` / `9:16`	—	Output frame shape.

Billing

You pay for output seconds: $0.06 at 1080p, $0.12 at 1440p, $0.24 at 2160p.

Output	1080p	1440p	2160p
6s (default)	$0.36	$0.72	$1.44
10s	$0.60	$1.20	$2.40
20s	$1.20	$2.40	$4.80

Failed runs are not charged.

Prompting

Describe subject, action, camera, and sound.

Also on SandBase

Other LTX 2.3 endpoints: lightricks/ltx-2.3-pro/text-to-video, lightricks/ltx-2.3-pro/image-to-video, lightricks/ltx-2.3-pro/audio-to-video, lightricks/ltx-2.3-pro/retake.

Start building

Send your first request

Submit this model through the SandBase Unified Run API.

Production API

Unified Run API endpoint

https://api.sandbase.ai/v1/run

Model ID

lightricks/ltx-2.3-fast/image-to-video

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/run" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "lightricks/ltx-2.3-fast/image-to-video",
  "image": "https://static.sandbase.ai/examples/lightricks/ltx-2.3-fast/image-to-video/input_image_0.png",
  "prompt": "Snorkel lens ground-scraping tracking shot following a barefoot Ethiopian long-distance runner training on a dirt road at dawn, camera inches from the ground racing alongside, her feet kicking up red dust in slow motion at 240fps, Rift Valley landscape blurred in the background, the texture of earth and callused skin in hyper-detail, 40mm snorkel lens at ground height, Nike Running documentary meets Lubezki natural light, the poetry of human endurance",
  "duration": 6,
  "resolution": "1080p",
  "generate_audio": true
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
  status=$(printf '%s' "$result" | jq -r .status)
  case "$status" in completed|failed|timeout) break ;; esac
  sleep 2
  result=$(curl --fail-with-body --silent \
    -H "Authorization: Bearer $SANDBASE_API_KEY" \
    "https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"

2. Authentication

Create a SandBase API key and set it in your server environment. All requests use Bearer authentication.

API key environment variable

export SANDBASE_API_KEY="YOUR_API_KEY"

Keep the key on your server. Do not expose it in browser code or commit it to a repository.

3. Queue

Submit a request

POST to /v1/run with this model ID and its inputs. The request example above includes submission and polling.

Fetch request status and result

Use the returned run ID to poll until the status is completed, failed or timeout. Read output only after completed.

Poll run status

curl "https://api.sandbase.ai/v1/run/$RUN_ID" \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

4. Files

Hosted files

Pass a publicly accessible file URL in the model’s image, video or audio field. Supported formats and limits are shown beside each Playground input.

Uploading images

Use the upload or replace control on supported image fields in the Playground. Video URL fields accept a hosted driving video; they do not imply video-upload support.

5. Schema

Input

`image`stringrequired

URL of the image to generate the video from. Must be publicly accessible or base64 data URI. Supports PNG, JPEG, WebP, AVIF, and HEIF formats.

`prompt`stringrequired

The prompt to generate the video from

`duration`integer

The duration of the generated video in seconds. The fast model supports 6-20 seconds. Note: Durations longer than 10 seconds (12, 14, 16, 18, 20) are only supported with 25 FPS and 1080p resolution.

Default: 6

Possible values: 6, 8, 10, 12, 14, 16, 18, 20

`end_image`string

The URL of the end image to use for the generated video. When provided, generates a transition video between start and end frames.

`resolution`string

The resolution of the generated video

Default: "1080p"

Possible values: "1080p", "1440p", "2160p"

`aspect_ratio`string

Output aspect ratio. Omit to match the input image.

Possible values: "16:9", "9:16"

`generate_audio`boolean

Whether to generate audio for the generated video

Default: true

Request body

{
  "model": "lightricks/ltx-2.3-fast/image-to-video",
  "image": "https://static.sandbase.ai/examples/lightricks/ltx-2.3-fast/image-to-video/input_image_0.png",
  "prompt": "Snorkel lens ground-scraping tracking shot following a barefoot Ethiopian long-distance runner training on a dirt road at dawn, camera inches from the ground racing alongside, her feet kicking up red dust in slow motion at 240fps, Rift Valley landscape blurred in the background, the texture of earth and callused skin in hyper-detail, 40mm snorkel lens at ground height, Nike Running documentary meets Lubezki natural light, the poetry of human endurance",
  "duration": 6,
  "resolution": "1080p",
  "generate_audio": true
}

Output

A completed run exposes its result in output. The following is the model’s saved example, not a new generation.

Example output JSON

[
  {
    "poster": "https://static.sandbase.ai/examples/posters/751eba32b385e955d0a9.jpg",
    "source": "Lightricks/LTX schema mirror",
    "source_url": "https://ltx.studio/",
    "url": "https://static.sandbase.ai/examples/78072a01-7219-4993-a8f3-089836e6ad15/output/abec3b97-53f7-487e-a14c-e60845ffb0a8.mp4"
  }
]

LTX 2.3 Fast Image to Video

Playground

Examples

Arena

LTX 2.3 Fast Image to Video

Fields

Billing

Prompting

Also on SandBase

Send your first request

2. Authentication

3. Queue

Submit a request

Fetch request status and result

4. Files

Hosted files

Uploading images

5. Schema

Input

imagestringrequired

promptstringrequired

durationinteger

end_imagestring

resolutionstring

aspect_ratiostring

generate_audioboolean

Output

LTX 2.3 Pro Image to Video ↗

LTX 2.3 Fast Text to Video ↗

LTX 2.3 Pro Retake ↗

LTX 2.3 Pro Text to Video ↗

LTX 2.3 Pro Video Extend ↗

LTX 2.3 Pro Audio to Video ↗

`image`stringrequired

`prompt`stringrequired

`duration`integer

`end_image`string

`resolution`string

`aspect_ratio`string

`generate_audio`boolean