Question 1

What can I make with LTX 2.5 Fast?

Accepted Answer

Social ads, product demos, music videos, title cards, storyboards, and concept reels. Anything that starts with a prompt and ends in a finished clip with sound. Animate a still image into a moving scene. Pin an opening frame and a closing frame and let the model build the motion between them. LTX 2.5 Fast renders in well under a minute at the common settings, so it suits work where you try ten ideas before you pick one.

Question 2

Does LTX 2.5 Fast generate audio?

Accepted Answer

Yes. Turn Audio on and the model writes dialogue, ambient sound, and effects in the same pass as the picture. The lip movement and the speech line up, because one model produces both. The result lands as a single MP4 with the sound baked in, so you can drop it straight into an edit. Turn Audio off when you plan to score the clip yourself.

Question 3

How long can an LTX 2.5 Fast clip be at 2K or 4K?

Accepted Answer

Ten seconds. Clips run from two to twenty seconds at 720p and 1080p, but 2K and 4K stop at ten seconds. There is a second limit on top of that: at 48 or 50 frames per second the clip stops at ten seconds at any resolution. So twenty seconds is available only at 720p or 1080p, and only at 24 or 25 frames per second. Visual Sandbox checks the combination before the run starts, so an over-long request is refused rather than charged. For a long 4K piece, render several ten-second clips and join them in your editor.

Question 4

Can I set the first and last frame of an LTX 2.5 Fast clip?

Accepted Answer

Yes. Attach a first-frame image to animate a still you already have. Attach a last-frame image as well and the model builds the motion that carries one into the other. Use both frames when you need the clip to land on an exact shot, such as a logo, a packshot, or the opening frame of the next cut. Use the first frame alone when only the start matters.

Question 5

What aspect ratios and resolutions does LTX 2.5 Fast support?

Accepted Answer

Landscape 16:9 and portrait 9:16. There is no square or wide cinematic option on this model, so crop in your editor or pick a model with more shapes when you need one. Resolutions are 720p, 1080p, 2K, and 4K. Pick 9:16 for TikTok, Reels, and Shorts. Pick 16:9 for a landing page, a trailer, or YouTube.

Question 6

Which frame rate should I pick?

Accepted Answer

Pick 24 for a filmic look and 25 for broadcast in Europe. Pick 48 or 50 when the shot has fast motion and you want it smooth, or when you plan to slow the clip down in an editor. Remember that 48 and 50 cap the clip at ten seconds. The frame rate does not change the price, because Visual Sandbox bills per second of output rather than per frame.

Question 7

Should I use LTX 2.5 Fast or Veo 3.1?

Accepted Answer

Pick LTX 2.5 Fast for speed, resolution, and volume. It reaches 4K, it runs to twenty seconds, and it costs a fraction of Veo 3.1 per second. Pick Veo 3.1 when the dialogue has to carry the shot, because its audio and its physical realism are stronger, and it takes reference images to hold a character across cuts. A common flow is to explore on LTX 2.5 Fast and finish the hero shot on Veo 3.1.

Question 8

How much does an LTX 2.5 Fast video cost?

Accepted Answer

LTX 2.5 Fast is billed per second of output, and the rate doubles at each step up in resolution. The pricing table above shows the rate for 720p, 1080p, 2K, and 4K. Visual Sandbox shows the exact cost before you generate, and charges per clip when the result is delivered. There is no subscription and no monthly minimum.

Question 9

Can I use LTX 2.5 Fast videos commercially?

Accepted Answer

Yes. Lightricks releases LTX 2.5 under a community licence that allows commercial and production use of what you generate. The licence puts a revenue threshold on running the model weights yourself, not on the videos you make here. You stay responsible for the prompt and the final use, especially when the clip shows a real person, a logo, or copyrighted material.

Tier	Price
720p	$0.04/s
1080p	$0.08/s
2K	$0.15/s
4K	$0.30/s

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