LTX · by Lightricks

LTX AI video generator

LTX is Lightricks' video model family, known for speed, low cost and open weights you can run yourself. LTX 2.5 generates sound with the picture, cuts between shots and renders up to 4K on its Fast tier. Write a scene below and it opens in Video Studio on LTX 2.5 Pro.

optional
Use a JPG, PNG or WebP under 20 MB, with each side between 300 and 6000 pixels.

Sign in to continue. Review your setup in the studio.

Example video

Opens in Video Studio with the model you picked. You see the price in credits before anything runs.

What LTX is known for

Fast and low-cost

LTX competes on speed and price rather than raw spectacle, which makes it a good model for drafting many takes of everyday scenes.

Sound tied to the picture

Dialogue, effects and room tone are generated with the video at no extra cost; our creator's tip landed word for word.

Open weights

LTX 2.3 and 2.5 weights are published under Lightricks' community licence, free below a revenue threshold, so studios can also run and fine-tune them.

Up to 4K and 20 seconds (Fast)

LTX 2.5 Fast renders up to 2160p and runs up to 20 seconds; Pro is the quality tier at 720p or 1080p.

Where it's weaker

  • On-screen text is unreliable: the neon sign in our close-up came out as gibberish.
  • Some clips barely move: a dance routine we prompted came back almost still, so we left it out.
  • Speech can wander between lines: our street interview added a few garbled words before the answer.
  • It trails the largest closed models on fine detail and physics; LTX's own benchmarks are not independently reproduced.
Maker
Lightricks · LTX 2.5 August 2026
Clip length on Affogato
6, 8 or 10 s (2.5 Pro) · up to 20 s (2.5 Fast)
Resolution
720p · 1080p (Pro) · up to 2160p (2.5 Fast)
Aspect ratios
9:16 · 16:9
Sound
Native, included in the price
Licence
Open weights (LTX community licence)

Which LTX to pick

Start here

LTX 2.5 Pro

Most clips

The quality tier of the newest LTX: sound, multi-shot and 1080p. Start here.

From 131 credits · 6–10 s

Open with LTX 2.5 Pro

Option 2

LTX 2.5 Fast

Long clips and 4K

Cheaper and faster, and the only tier that goes to 20 seconds and 2160p.

From 98 credits · 6–20 s

Open with LTX 2.5 Fast

Option 3

LTX Video 2.3 Pro

Matching earlier work

March 2026, the previous generation, at a lower price per clip.

5 s clip 73 credits · 5–10 s

Open with LTX Video 2.3 Pro

LTX Video 2.3 Fast and LTX Video 13B Distilled are also in the studio's model menu. Credits are read from the live catalog; the Standard plan ($24/month) includes 2,000 credits.

Prompting LTX well

  1. Write one flowing paragraph: the sound, the camera, the person, the shot, the place, the action.
  2. Tie every sound to something on screen ("his laugh", "milk pouring").
  3. Give dialogue a beat of stillness before the line.
  4. One subject, one action and one camera move per clip; say portrait or landscape up front.
  5. For several shots, name each cut and describe returning people with the same words.

From prompt to clip

  1. Describe the scene or add a photo

    Write the scene in the box at the top of this page, or start from an example. Add a photo to use it as the first frame.

  2. Sign in and land in Video Studio

    Your prompt, photo and format carry over with LTX selected. Nothing runs until you press Generate.

  3. Pick the length, then generate

    The credit price shows under the Generate button before anything is spent.

  4. Go long or 4K on Fast

    Switch to LTX 2.5 Fast for clips up to 20 seconds or 2160p.

Open Video Studio

Questions about LTX

What is LTX best at?

Fast, low-cost clips with sound, everyday scenes and talking to camera, and open weights for teams that want to run or fine-tune the model themselves.

Is LTX open source?

LTX publishes its weights under the LTX community licence: free below a revenue threshold, paid above it. That is open weights rather than an open-source licence.

What is the difference between LTX 2.5 Pro and Fast?

Pro is the quality tier at 720p or 1080p up to 10 seconds. Fast is cheaper and quicker, and goes up to 20 seconds and 2160p.

Does LTX generate sound?

Yes. Dialogue, effects and ambience come with the picture, included in the price.

Is LTX free on Affogato?

No. Every run costs credits, priced by clip length and shown before you generate. Credits come with a monthly plan and unused credits roll over up to the plan's cap.

Can I use LTX videos commercially?

Yes. Paid Affogato plans include a commercial license and no watermark, within our terms of service.

Keep exploring

Facts checked November 15, 2026. Sources: Hugging Face: LTX-2.3 · Hugging Face: LTX-2.5 · DataNorth: LTX 2.5 release · fal: how to use LTX 2.5 · invideo: LTX guide