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LTX

LTX

Open-source AI video generation — 4K, synchronized audio, and creative control.

AI Video StudioVideo GeneratorOpen SourceAudioTrial

LTX by Lightricks is a state-of-the-art open-source video generation model that produces synchronized audio+video, 4K resolution at up to 50 FPS, and supports image-to-video, video extension, multi-keyframe control, and LoRA fine-tuning. Available via web app at ltx.studio, with open-source weights on Hugging Face and a vibrant ComfyUI community.

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Updated

2026-10-22

Platforms

Web / API

Freemium

Web app credits needed for cloud generation

* Pricing is for reference only; see the official site for current pricing.

LTX
ltx.video

LTX Key Features

  • Audio + Video

    Generate visuals and sound together in one coherent process — motion, dialogue, ambience, and music flow simultaneously without post-sync.

  • 4K Quality

    Professional-grade precision with native 4K output and up to 50 fps — sharp textures, clean motion, and production-ready quality.

  • Creative Control

    Start from images, extend existing clips forward or backward, and condition on multiple keyframes for precise scene control.

  • Open Source

    Model weights on Hugging Face, LoRA fine-tuning support, and deep ComfyUI integration — customize and extend freely.

LTX Best For

Video creators

Generate synchronized audio-video footage, extend clips, and control scenes with keyframes.

AI developers

Experiment with open-source video generation using LoRA fine-tuning and ComfyUI.

Pros

  • Open-source — full model weights available
  • Synchronized audio+video eliminates post-production sync
  • Native 4K at 50 FPS — production-ready quality
  • Active developer community with ComfyUI workflows

Considerations

  • Requires powerful GPU for local inference
  • Web app credits needed for cloud generation
  • Still evolving — newer LTX-2 model announced

LTX Quick Start and Practical Tips

Quick start

  1. 1

    Supply a high-contrast first frame to guide camera motion and sound sync.

  2. 2

    Set video duration to 3-5 seconds to preserve visual stability.

  3. 3

    Lock the character sheet for the whole project so shots share one look.

Pro tip

Core tip: anchor generations with high-resolution initial frames. Pure text prompts drift into surreal morphing after two seconds, whereas image-to-video mode pins character and lighting consistency. Local inference demands high VRAM; test on web tiers first.

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