Ltx 2.5 Api
4 modes on this page
Ltx 2.5 Api 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 2.5 Api output
$0.12 per second·~90s
What Ltx 2.5 Api is for
Ltx 2.5 Api from Lightricks turns a written prompt into a short video clip. Runtime is about 90 seconds and compute is $0.12 per second. Modes on this page: Image to Video (Pro), Image to Video (Fast), Text to Video (Pro), and Text to Video (Fast). It is a clip generator, not a full training-video editor.
Ltx 2.5 Api is billed in Knowlify credits at the compute cost ($0.12 per second). A typical run is about 90 seconds. Published rate: Your request will cost $0.12 per second for 720p or $0.17 per second for 1080p.
Pick Ltx 2.5 Api for text to video at $0.12 per second and ~90s. Compare it with Ltx 2 19b, Ltx 2 19b Distilled, Ltx 2 3 on the related cards below if you need a different look, speed, or input type.
How to use Ltx 2.5 Api
- 1. Upload the still Ltx 2.5 Api 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 2.5 Api 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 (720p, 1080p).
- Optional toggles on this model, such as audio or quality flags.
Example prompt
a street food stall at night in Mumbai, steam, crowds blurred, photoreal photograph, 85mm, natural light, no text, no watermark, no logo, no UI, slow cinematic camera move, natural motion
Frequently asked questions
How do I run Ltx 2.5 Api?
Run Ltx 2.5 Api on Knowlify at /generate/ltx-2-5-api. This page has 4 modes in one dropdown. Write the prompt on this page and it opens in the studio, where Ltx 2.5 Api generates a short clip. The same studio also turns documents into full narrated videos.
Where can I use Ltx 2.5 Api online?
On Knowlify (Lightricks's model, knowlify.com/generate/ltx-2-5-api). You do not need a separate playground. Ltx 2.5 Api runs in the studio next to document-to-video.
Can I make a longer video with Ltx 2.5 Api?
Ltx 2.5 Api 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 2.5 Api?
A prompt and a source still. Ltx 2.5 Api will not invent the starting frame for you on this mode.
How long does Ltx 2.5 Api 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 2.5 Api have more than one mode?
Yes. This page has 4 modes: Image to Video (Pro), Image to Video (Fast), Text to Video (Pro), and Text to Video (Fast). Switch them in the Mode dropdown instead of opening a new URL.
What does Ltx 2.5 Text to Video Fast cost?
Your request will cost $0.12 per second for 720p or $0.17 per second for 1080p. Knowlify charges this as credits, at the compute cost.
What is Ltx 2.5 Text to Video Fast best for?
LTX-2.5 is Lightricks' open-source audio-video model. This endpoint generates synchronized video and audio from a text prompt in a single pass, in a quality-optimized mode for final, high-fidelity output. It turns a text prompt into a video clip.
Do I need an account to use Ltx 2.5 Text to Video Fast?
Generation happens in the studio, so a free Knowlify account is required. Ltx 2.5 Text to Video Fast then runs against your credits.