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Video generation

ltx-2

First open-source 4K AI model for synchronized video and audio generation.

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AI video generation 4K video AI Audio Generation
More categories (9)
Open source AI Lightricks Text-to-Video Image-to-video DiT model Diffusion Transformer audiovisual content Apache 2.0 License NVIDIA optimized
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First open-source 4K AI model for synchronized video and audio generation
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First open-source 4K AI model for synchronized video and audio generation

Overview

LTX-2 is a state-of-the-art, production-ready AI foundation model developed by Lightricks for generating synchronized audiovisual content. It is the first fully open-source, open-weights AI model that supports native 4K resolution (2160p) video generation at up to 50 FPS, along with synchronized audio generation (including dialogue, ambient sounds, and music). Powered by a 19B parameter Diffusion Transformer (DiT) architecture, LTX-2 supports text-to-video and image-to-video generation, creating clips up to 20 seconds long. It is optimized for NVIDIA GPUs, offering 3x faster performance on RTX 50 Series.

ltx-2 screenshot

Access & connections

Where you can use ltx-2.

Platforms

Web

Capabilities

What this tool accepts, produces, and is strongest at.

Highlights

  • Native 4K Resolution (2160p) at up to 50 FPS
  • First open-weights model for synchronized audio and video generation
  • Supports Text-to-Video and Image-to-Video transformation
  • Generates extended clips up to 20 seconds with temporal coherence
  • Fully open-source under Apache 2.0 license (weights, code, inference pipeline)
  • NVIDIA Optimized for up to 3x faster performance and VRAM reduction

FAQ 5

What is LTX-2 by Lightricks?
LTX-2 is a state-of-the-art, production-ready AI foundation model developed by Lightricks for generating synchronized audiovisual content. It is the first fully open-source, open-weights AI model that supports native 4K resolution (2160p) video generation at up to 50 FPS, along with synchronized audio generation (including dialogue, ambient sounds, and music). Powered by a 19B parameter Diffusion Transformer (DiT) architecture, LTX-2 supports text-to-video and image-to-video generation, creating clips up to 20 seconds long. It is optimized for NVIDIA GPUs, offering 3x faster performance on RTX 50 Series.
How to use LTX-2 by Lightricks?
LTX-2 can be used by accessing the interactive demo directly in the browser, or by deploying the fully open-source model locally using the provided weights, training code, and inference pipeline available on GitHub and Hugging Face. Users can transform text prompts or static images into dynamic video content, utilizing features like multi-keyframe conditioning for advanced control. Deployment is also possible via cloud APIs like Fal, Replicate, and RunDiffusion.
What makes LTX-2 different from other AI video models?
LTX-2 is the first fully open-source model with synchronized audio and video generation, supporting true 4K resolution at up to 50 FPS. It offers complete access to weights and training code under the Apache 2.0 license, enabling local execution and custom fine-tuning.
What hardware do I need to run LTX-2?
Recommended hardware includes an NVIDIA RTX 40/50 series GPU with 16GB+ VRAM, Python 3.10+, and CUDA 12.7+. Optimized versions support FP8/FP4 formats for reduced memory usage. Cloud deployment options are also available.
Is LTX-2 really free to use?
Yes, LTX-2 is fully open-source under the Apache 2.0 license. You can use it freely for commercial and non-commercial purposes, modify the code, and fine-tune the model.
ltx-2
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