LongCat Video â?open-source AI for minutes-long 720p clips

LongCat Video is a 13.6B dense model that keeps motion smooth, color stable, and prompts faithful for text-to-video, image-to-video, and video continuation. Generate coherent 720p 30fps sequences that actually run minutes long.

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Platform Transparency

LongCat Video is an independent wrapper that provides a user-friendly interface on top of LongCat and other third-party AI models. We focus on clearer UI, extra video tools, flexible pricing, and support that replies within 3 business days.

LongCat Video features for production teams

Everything you need to keep long videos coherent and on-brand.

13.6B dense architecture

All parameters stay active so LongCat Video keeps subjects stable across frames.

Coarse-to-fine speedup

Generate fast drafts then refine to crisp 720p 30fps without rerunning the whole clip.

Block Sparse Attention

Less than 10% of the usual attention cost, so LongCat Video runs longer without melting GPUs.

GRPO multi-reward tuning

Balances visual quality, motion quality, and text alignment for prompt-faithful outputs.

Continuation-native training

Pretrained on continuation, so extending clips feels natural with fewer sudden resets.

MIT license & open weights

Use LongCat Video commercially, fine-tune privately, and deploy the workflow anywhere.

Long-form video without wobble: meet LongCat Video

Dense parameters, continuation-native training, and efficient attention keep stories stable across hundreds of frames.

Text-to-video, image-to-video, continuation

One LongCat Video stack covers prompts, still-frame extensions, and clip stitching so teams can storyboard once and render straight through.

720p 30fps minutes-long output

Train-time video continuation plus GRPO rewards keep objects stable and motion natural for multi-minute runs.

Dense 13.6B > MoE 28B

All parameters fire every frame, helping LongCat Video hold alignment and visual quality without huge hardware.

Open and deployable

MIT licensing, reproducible seeds, and browser-friendly tools make LongCat Video practical for research, product, and creative pipelines.

Why LongCat Video wins long form

Open, fast, and consistent for real productions.

13.6B dense

All-parameter LongCat Video core for stable frames

720p 30fps

Default LongCat Video quality for smooth playback

Minutes-long

Continuation + GRPO keep stories coherent past 60s

MIT

Open-source LongCat Video license for commercial use

Create with LongCat Video in 3 steps

Prompt or upload â?LongCat Video â?publish. Long clips without jitter.

Step 1: Write or paste your prompt

Describe scene, camera, motion, and duration. Add seed for reproducible LongCat Video runs.

Step 2: Add an image (optional)

Use image-to-video or continuation to keep style and layout locked while LongCat Video extends the story.

Step 3: Render 720p 30fps

Coarse-to-fine rendering plus Block Sparse Attention keep LongCat Video outputs smooth for minutes. Export MP4, GIF, or thumbnails.

LongCat Video FAQs

Answers about quality, licensing, hardware, and prompt writing for LongCat Video.

Need help? Email support@longcat-video.com

LongCat Video refers to the open-source model family and this site provides an independent, creator-friendly interface for experimenting with those workflows.

Latest Blog Posts

Tutorials, guides, and updates about LongCat Video.

Jan 31, 2026

How to Create Sports Coaching Animation Videos with LongCat Video

Prompt techniques, resolution strategies, and workflow tips for creating professional sports training videos with AI.

Jan 25, 2026

LongCat Video: The Complete Guide to AI Video Generation

Learn how to use LongCat AI video generation, ComfyUI workflows, download guides, and advanced prompting techniques.

Jan 24, 2026

LongCat Video: Smooth Cinematic Motion for Long-Form Storytelling

Why continuity, motion stability, and prompt fidelity make LongCat Video useful for long-form creative production.

Ready to launch long-form clips with LongCat Video?

Use LongCat Video to turn prompts or images into minutes-long 720p 30fps stories without drift.

Start generating with LongCat Video

LongCat Video â?open-source AI for minutes-long 720p clips