Ltx 2 3
7 modes on this page
Ltx 2 3 turns a text prompt into a video clip. Pick a mode, write the prompt, run it in the studio.
Input
FormMode
Prompt*
Start Image URL*
Aspect Ratio
Resolution
Result
PreviewMotion preview, not Ltx 2 3 output
$0.06 per second·~90s
What Ltx 2 3 is for
Ltx 2 3 from Lightricks turns a written prompt into a short video clip. Runtime is about 90 seconds and compute is $0.06 per second. Modes on this page: Image to Video (Fast), Image to Video (Pro), Text to Video (Fast), Text to Video (Pro), Extend Video, Audio to Video, and Retake Video. It is a clip generator, not a full training-video editor.
Ltx 2 3 is billed in Knowlify credits at the compute cost ($0.06 per second). A typical run is about 90 seconds. Published rate: Your request will cost $0.06 per second for 1080p, $0.12 per second for 1440p or $0.24 per second for 2160p.
Pick Ltx 2 3 for text to video at $0.06 per second and ~90s. Compare it with Ltx 2 19b, Ltx 2 19b Distilled, Ltx 2.3 22b on the related cards below if you need a different look, speed, or input type.
How to use Ltx 2 3
- 1. Upload the still Ltx 2 3 should start from, then write the change or motion in Input.
- 2. Run it. The prompt and file hand off to the Knowlify studio, where Ltx 2 3 generates.
- 3. Stay in the studio if you want that frame or clip inside a longer narrated video.
What you need
- A prompt that names the subject, camera move, and lighting.
- A source still (PNG or JPG) for the model to start from.
- Aspect Ratio (16:9, 9:16).
- Resolution (1080p, 1440p, 2160p).
- Optional toggles on this model, such as audio or quality flags.
Example prompt
a subway car empty except for a leopard on a bench, fluorescent light, octane 3D render, subsurface, chrome accents, no text, no watermark, slow cinematic camera move, natural motion
Frequently asked questions
How do I run Ltx 2 3?
Run Ltx 2 3 on Knowlify at /generate/ltx-2-3. This page has 7 modes in one dropdown. Write the prompt on this page and it opens in the studio, where Ltx 2 3 generates a short clip. The same studio also turns documents into full narrated videos.
Where can I use Ltx 2 3 online?
On Knowlify (Lightricks's model, knowlify.com/generate/ltx-2-3). You do not need a separate playground. Ltx 2 3 runs in the studio next to document-to-video.
Can I make a longer video with Ltx 2 3?
Ltx 2 3 itself produces a short clip. On Knowlify you can take that output, or skip it and upload a document, and generate a full narrated video with a script you can edit.
What do I need to run Ltx 2 3?
A prompt and a source still. Ltx 2 3 will not invent the starting frame for you on this mode.
How long does Ltx 2 3 take?
Plan on about 90 seconds for a typical run, then whatever queue time the studio has. Video models sit at the high end of that range.
Does Ltx 2 3 have more than one mode?
Yes. This page has 7 modes: Image to Video (Fast), Image to Video (Pro), Text to Video (Fast), Text to Video (Pro), Extend Video, Audio to Video, and Retake Video. Switch them in the Mode dropdown instead of opening a new URL.
What does LTX 2.3 Video Fast cost?
Your request will cost $0.06 per second for 1080p, $0.12 per second for 1440p or $0.24 per second for 2160p. Knowlify charges this as credits, at the compute cost.
What is LTX 2.3 Video Fast best for?
LTX-2.3 is a high-quality, fast AI video model available in Pro and Fast variants for text-to-video, image-to-video, and audio-to-video. It turns a text prompt into a video clip.
Do I need an account to use LTX 2.3 Video Fast?
You need a Knowlify account to run LTX 2.3 Video Fast, and signing up is free. Your prompt carries across.