LTX 2.5 Fast Uncensored
LTX 2.5 Fast Uncensored is Lightricks's video model, hosted on Vellria with nothing to install: text to video and image to video, 720p to 1080p, clips of 6–20s. Run it in Studio or over the REST API, from 25 credits / s (100 credits = $1.00).
vellria-ltx-2-5-fastLTX 2.5 Fast is developed by Lightricks. Vellria provides access to the model; it does not own it. All trademarks belong to their respective owners.
Output
No generation yetCover art
from 25 credits / s
Your request will cost 150 credits.
About LTX 2.5 Fast
Also known as: LTX-2.5 Fast · Lightricks LTX 2.5 Fast · LTX 2.3 successor · LTX Video Fast
LTX 2.5 Fast is the quick tier of LTX 2.5, the video model from Lightricks, the developer of the open LTX Video family. It succeeds LTX 2.3 rather than renaming it. Clips come with generated sound, the frame can be landscape or portrait, and takes run longer than on the Pro tier.
Fast is built for iteration. The price per second is lower than LTX 2.5 Pro and the length range is wider, so it is the place to find the staging, pacing and camera move before committing. Lengths come in even steps, so plan a beat as six, eight or ten seconds rather than seven.
Prompts read best as one flowing description: who is in the frame, what they do, how the camera moves and what the scene sounds like. Keep each clip to one main action; a longer take gives that action room to unfold instead of inviting a second scene.
Starting from a still keeps a look you already have: the upload becomes the opening frame. Crop the picture first and set the frame to suit it. For a different motion style on the same idea, compare Wan 3.0, and for a very short loop try Pruna P-Video 2.
LTX 2.5 Fast in action
LTX 2.5 Fast outputs with the exact prompts behind them.
Image to video
Snow keeps falling as she turns her head toward the steaming train, her breath visible in the cold air, the camera slowly pushes in
Image to video
She turns from the window toward the camera and smiles, pulling the cardigan closed around her shoulders, soft sunlight, static wide shot, the camera does not zoom or move closer
Text to video
Tracking shot of a woman in her thirties in a white sundress riding a vintage bicycle along a lavender field road at golden hour, her hair blowing in the breeze
When to pick LTX 2.5 Fast
Pick it when
- You are iterating on staging, pacing and camera moves and want to see many takes before committing to one.
- Your beat needs room to unfold, such as a slow build that runs past what the quality tier allows in one take.
- You want sound-equipped drafts at 720p or 1080p without paying for the higher resolution tiers.
Pick another model when
- The shot is decided and must look its sharpest, with resolution up to 4K; render it on LTX 2.5 Pro.
- You want a long take with a different feel in camera and sound; compare Seedance 2.5.
- You want your clip to stay close to an existing image; MiniMax H3 Max stayed close to the supplied frame in our runs.
Prompt or reference
Drafting from text is the usual start on Fast: describe the action, pick landscape or portrait, and run several versions of the beat. A still is worth uploading once a look has to survive into the clip; it opens the take, so crop it to the frame shape you picked first.
How to use LTX 2.5 Fast on Vellria
- Prompt: up to 10,000 characters in the panel above.
- Cost: from 25 credits / s — see pricing.
Example prompts
An adult woman in lingerie stretches on a sunlit bed in a loft apartment, slow dolly in, soft morning light, birdsong through an open window.
From the uploaded still: the adult man at the poolside pulls off his shirt and dives in, camera follows at water level, splash and summer cicadas.
Portrait frame: an adult couple slow dance in a dim bar, handheld camera circling them, a jazz trio playing softly.
An adult woman in a bikini walks out of the sea toward the camera at golden hour, waves breaking behind her, wind in the microphone.
Long take: two adult lovers slowly shed their clothes by firelight in a cabin, static wide frame, crackling logs and quiet breathing.
Tips
- Lengths come in even steps; plan the beat to fit six, eight or ten seconds and upward.
- Use 720p for exploring and 1080p once the shot works.
- Keep one action per clip; use the extra length to let it breathe.
- Move the version you like to LTX 2.5 Pro if it needs a sharper finish.
- Write the sound you expect, such as music, rain or voices, in the same sentence as the action so picture and audio agree.
Specifications
| Resolution: | 720p1080p |
|---|---|
| Duration: | 6–20s |
| Aspect ratio: | 16:99:16 |
| Reference images: | 1 reference image |
See also: uncensored AI video generator · NSFW video generation · NSFW image to video.
Pricing
| Resolution | Credits |
|---|---|
| 720p | 25 credits / s |
| 1080p | 35 credits / s |
LTX 2.5 Fast vs LTX 2.5 Pro
LTX 2.5 Fast is the drafting tier of Lightricks' LTX 2.5: longer takes for less per second, on the lower resolution steps. Pro shares its prompts, frame shapes and start-frame behaviour and adds the higher resolutions.
| Model | Price | Max resolution | Duration | Reference images |
|---|---|---|---|---|
| LTX 2.5 Fast Uncensored This page | from 25 credits / s | 1080p | 6–20s | Up to 1 |
| LTX 2.5 Pro Uncensored | from 35 credits / s | 4K | 6–10s | Up to 1 |
Prices and limits come from the live model catalog.
LTX 2.5 Fast or LTX 2.5 Pro?
- Price: from 35 credits / s (LTX 2.5 Fast: from 25 credits / s)
- Max resolution: 4K (LTX 2.5 Fast: 1080p)
- Duration: 6–10s (LTX 2.5 Fast: 6–20s)
Move to LTX 2.5 Pro for the final render of a shot staged here. Its takes are shorter, so trim the action to fit, and choose Pro's top resolution steps only when the clip will be watched full screen.
LTX 2.5 Fast API: price and a first request
LTX 2.5 Fast costs from 25 credits / s over the API, the same rate as in Studio. Model id vellria-ltx-2-5-fast on POST /v1/generate/video.
curl https://vellria.com/v1/generate/video \
-H "Authorization: Bearer vll_..." \
-H "Content-Type: application/json" \
-d '{
"model": "vellria-ltx-2-5-fast",
"prompt": "…",
"duration": 6,
"resolution": "720p",
"ratio": "16:9"
}'Parameters, polling and uploads: API documentation · NSFW video API.
FAQ
Does LTX 2.5 Fast allow NSFW?
Yes, for fictional adult content. Nudity and explicit scenes between adults are allowed. Minors are refused automatically and real people may not be animated without consent.
Is LTX 2.5 Fast free?
No, there is no free plan, but a new account created with Google gets 20 credits as a gift, valid for 7 days, which you can put toward LTX 2.5 Fast at from 25 credits / s. Beyond that every run is paid from prepaid credits at the rate this page shows before you start, and a run that fails at the provider is refunded automatically. Is there a free uncensored AI generator? covers the cheapest way to a first result.
Why can't I pick an odd number of seconds?
The model only renders even-second lengths, so the length picker offers those steps. The full list is in the specifications table, generated from the live catalog.
Should I use LTX 2.5 Fast or LTX 2.5 Pro?
Explore and make longer drafts on Fast; use Pro for the finishing pass on a decided shot when you want a higher resolution.
Can I generate LTX 2.5 Fast clips by API?
Yes. Drafts can be scripted: the request in the API section on this page already carries this model's id, and the API reference explains how to poll for the finished clip.
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