Video Gen · Model Guide · 4 min read

LTX-Video 2B

The speed demon of open video — a 2B model that generates clips faster than they play back, on 8–12 GB cards.

Basic Information

LTX-Video is Lightricks' compact open video model built around one idea: real-time-scale generation. Its small 2-billion-parameter DiT design produces short clips dramatically faster than its larger siblings — near-playback speed on capable GPUs — at the cost of lower peak fidelity than Wan or Hunyuan.

For interactive workflows (rapid iteration, storyboarding, live previews) and modest hardware, it is the open video model to reach for, and newer releases continue improving resolution and duration.

Best use cases

• Fast iteration: many prompt variations in the time one big model generates one clip
• Local video generation on 8–12 GB consumer GPUs
• Real-time-ish previewing inside ComfyUI pipelines
• Learning video-diffusion workflows on affordable hardware

Computational Requirements

The most accessible video model on this list: roughly 5–10 GB of VRAM depending on resolution and quantization — entry-level cards need not apply elsewhere.

Commercial license

Open weights under Lightricks' release license (check the current model card — terms have shifted between versions, with some releases non-commercial). The 2B base model's release was broadly permissive; verify the exact repository you download.