Lightricks open-sources a lightning-fast AI video model
Lightricks just released LTX Video, an open-source model that generates five seconds of video in just four seconds. With only 2 billion parameters, it runs near real-time on consumer GPUs like the RTX 4090 instead of locking users behind paid APIs. Why it matters: Bringing rapid video generation to local gaming PCs gives indie creators a real alternative to big tech monopolies.
LTX Video (LTXV) is a freshly open-sourced AI video generator built to turn text prompts into high-quality clips directly on consumer-grade hardware in just seconds.
While most cutting-edge video generators are walled behind pricey cloud APIs that force you to wait minutes per generation, LTXV takes the local-first route. With a compact footprint of just two billion parameters, it is designed so creators can deploy and run it locally on an everyday gaming rig.
What it can do
Speed is the headlining feature here.
On high-end Nvidia H100 GPUs, LTXV can generate a five-second video clip—121 frames at 768x512 resolution—in only four seconds. More importantly for local tinkerers, it delivers near real-time generation speeds on consumer GPUs like the Nvidia RTX 4090.
In sample tests, the model handled complex cinematic shots like an urban fashion sequence with consistent reflections and lighting, as well as nostalgic retro computer clips, all within a four-second turnaround.
Beyond simple clips, the model architecture is designed to scale into longer-form video production. Potential use cases range from upscaling retro game graphics to generating thousands of ad variations for e-commerce testing.
How it works and where to try it
The secret behind LTXV's balance of speed and visual fidelity is its Diffusion Transformer (DiT) architecture. It maintains motion smoothness and structural consistency between frames without blowing up the compute requirements.
Lightricks has teamed up with platforms like Hugging Face to make the model weights freely available. The company noted that it has no plans to monetize the model right now, betting instead on community adoption and developer extensions.
If you have a modern GPU like an RTX 4090, you can head over to Hugging Face right now, download the weights, and run the pipeline locally on your machine without relying on subscription credits.
Why it matters
Waiting several minutes for a single AI video output kills creative momentum. Giving creators five-second iterations directly on local hardware turns video generation into an interactive sandbox rather than a slow queue.
We think open-sourcing LTXV is a sharp play against proprietary giants like OpenAI and Google. While 768x512 resolution is still too modest for final commercial delivery, having a free, rapid local model is a dream for indie developers, storyboard artists, and researchers looking to prototype without big tech toll gates.
Sources (1)
- venturebeat.com(opens in a new tab)Originalventurebeat.com