LTX-2: 4K AI Video with Synchronized Audio
19B Parameters · 4K 50FPS · 20 Seconds · Apache 2.0
The first complete open-source AI video foundation model. Generate cinematic 4K videos at 50FPS with perfectly synchronized audio, dialogue, and sound effects in a single pass.
Generate with LTX-2
Enter a rich prompt to create a synchronized video. Credits required.
Generate with LTX-2
Enter a rich prompt to create a synchronized video. Credits required.
Recent tasks
What is LTX-2?
LTX-2 is a groundbreaking open-source AI video model developed by Lightricks, featuring a 19-billion parameter Diffusion Transformer (DiT) architecture. It generates synchronized 4K video and audio in a single unified process.
With its asymmetric dual-stream design (14B video + 5B audio parameters), LTX-2 produces cinematic-quality content with natural dialogue, ambient sounds, and music perfectly aligned to on-screen action.
LTX-2 Model
Open Source Video Foundation Model
Synchronized audio-video generation in single pass
Native 4K resolution at up to 50 frames per second
Apache 2.0 license - fully commercial use allowed
Multimodal inputs: text, image, video, keyframes
Why Choose LTX-2?
The most advanced open-source AI video model available
Synchronized Audio-Video
Generate video and audio simultaneously in one pass. Natural alignment of dialogue, ambient sounds, music, and Foley effects with on-screen action.
Native 4K Resolution
Support for native 4K (3840×2160) resolution at up to 50 frames per second, delivering cinematic-quality visuals for professional production.
Extended Duration
Generate video clips up to 20 seconds long while maintaining temporal coherence and consistent quality throughout the entire sequence.
Open Source Apache 2.0
Fully open-source with model weights, training code, and inference pipeline available. Customize, fine-tune, and deploy locally as needed.
Multimodal Input
Accept various inputs including text prompts, images, depth maps, video snippets, audio samples, and multi-keyframe conditioning for precise control.
Efficient Performance
Optimized for speed with NVFP4/NVFP8 support. Up to 3x faster and 60% VRAM reduction on RTX 50 Series GPUs. Run on consumer hardware.
Technical Specifications
Industry-leading video generation capabilities
Model Parameters
Maximum Resolution
Frame Rate
Maximum Duration
Audio Synchronization
License
Use Cases
Perfect for filmmakers, advertisers, and content creators
Film & VFX
Create pre-visualizations, mood films, concept videos, and VFX sequences. Plan camera movements and explore visual directions before production.
- Pre-visualization
- Concept Development
- VFX Previews
Advertising & Marketing
Produce high-quality promotional videos rapidly. Test multiple concepts, generate product visualizations, and create campaign content efficiently.
- Product Videos
- Brand Campaigns
- A/B Testing
Social Media
Create engaging short-form content for TikTok, Reels, YouTube Shorts. Stand out with cinematic AI-generated videos with synchronized audio.
- TikTok / Reels
- YouTube Shorts
- Story Content
Simple 3-Step Workflow
From idea to video in minutes
Describe or Upload
Enter a text prompt or upload an image/video to guide the generation.
AI Generates
LTX-2 creates synchronized 4K video with audio in a single pass.
Download & Share
Get your high-quality video ready for any platform or project.
Frequently Asked Questions
LTX-2 is an open-source AI video foundation model developed by Lightricks. It features 19 billion parameters and generates synchronized 4K video and audio in a single pass using Diffusion Transformer (DiT) architecture.
LTX-2 supports native 4K resolution (3840×2160) at up to 50 frames per second, delivering cinematic-quality output suitable for professional production workflows.
LTX-2 can generate videos from 6 to 20 seconds in length, maintaining temporal coherence and consistent quality throughout the entire sequence.
Yes, LTX-2 is fully open-source under the Apache 2.0 license. Model weights, training code, and inference pipeline are available for download, customization, and commercial use.
Yes, videos generated with LTX-2 can be used commercially. The Apache 2.0 license allows full commercial usage rights for marketing, advertising, and content creation.
Yes, LTX-2 generates synchronized audio alongside video in a single pass. This includes dialogue, ambient sounds, music, and Foley effects naturally aligned with the visual content.
Ready to Create with LTX-2?
Experience the most advanced open-source AI video generation.