LTX-2: AI Video with Synchronized Audio

Generate production-grade 4K video with synchronized audio in a single AI model. The first DiT-based foundation model combining video and audio generation.

Open source. LoRA customizable. Up to 20 seconds at 50 FPS.

4K Native Resolution
50 FPS Frame Rate
20 sec Max Duration
18x Faster than WAN 2.2

Real LTX-2 Generated Videos

Watch actual AI-generated videos with synchronized audio - no post-processing, straight from the model

Text-to-Video

Generated with LTX-2 - 768x512 @ 24FPS

Image-to-Video

Synchronized audio generation

Motion Control

Camera movement precision

Core Capabilities

Everything you need for professional AI video production in a single model

Synchronized Audio-Video Generation
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Synchronized Audio-Video

Create videos with matching audio in one unified process. Dialogue, ambience, and music generated together with natural timing and synchronization.

Native 4K at 50 FPS
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Native 4K at 50 FPS

Generate cinematic-quality video at true 4K resolution and 50 frames per second. Production-ready output for professional workflows.

Precise Motion Control
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Precise Motion Control

Direct camera movement, pose-driven animation, and depth-aware generation. Control structure, motion, and camera behavior with intent.

LoRA Training Support
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LoRA Training & Customization

Train custom LoRAs for style, motion, or identity in under an hour. Adapt the model to your worlds, characters, and creative DNA.

What LTX-2 Can't Do

Honest limitations to help you decide if LTX-2 is right for your project. Understanding these constraints leads to better results.

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Not for Factual Content

LTX-2 is not designed to generate accurate text, numbers, or factual information in videos.

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Prompt Matching May Vary

Complex prompts may not be followed perfectly. Results depend heavily on prompting style and technique.

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Audio Quality Varies

Audio generation without speech tends to be lower quality. Best results come from prompts including dialogue or voice.

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High GPU Requirements

Requires 16GB+ VRAM for optimal quality. Lower VRAM GPUs need reduced resolution or shorter clips.

May Produce Biased Content

As a statistical model, may amplify existing societal biases present in training data.

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20 Second Maximum

Single generations limited to 20 seconds. Longer content requires multiple generations and editing.

When to Use LTX-2

Make the right choice for your project with this decision guide

Use LTX-2 When:

  • You need synchronized audio and video in one generation
  • Your project requires 4K/50 FPS professional output
  • You have access to 16GB+ VRAM GPU (RTX 3090+)
  • You want open-source flexibility with LoRA customization
  • You're creating cinematic, artistic, or stylized content
  • You need motion control (camera, pose, depth)

Consider Alternatives When:

  • You need text-heavy or factual content in videos
  • Your GPU has less than 12GB VRAM
  • You require guaranteed prompt accuracy
  • Audio-only or video-only output is sufficient
  • You need videos longer than 20 seconds without editing
  • You're working with photorealistic human faces (identity consistency)

LTX-2 Model Variants

Choose the right variant for your workflow and quality needs

Feature LTX-2 Fast LTX-2 Pro LTX-2 Ultra Coming Soon
Best For Brainstorming, rapid iteration Client reviews, stakeholder alignment Final delivery, broadcast
Max Resolution 4K 4K 4K
Frame Rate 25 FPS 25-50 FPS 50 FPS
Duration Up to 20s Up to 20s Up to 20s
Audio Sync ✅ Yes ✅ Yes ✅ Yes
Generation Speed ⚡⚡⚡ Fastest ⚡⚡ Fast ⚡ Standard
Visual Quality ⭐⭐ Good ⭐⭐⭐ Better ⭐⭐⭐⭐ Best

Technical Specifications

Detailed specifications for developers and production teams

Output Specifications

Maximum Resolution
4K (3840x2160)
Frame Rate
Up to 50 FPS
Duration
Up to 20 seconds
Model Size
19B parameters
Precision Options
bf16, fp8, fp4
Audio
Synchronized generation

System Requirements

Python
≥ 3.12
CUDA
> 12.7
PyTorch
~= 2.7
Recommended GPU
RTX 40 Series+ (16GB+ VRAM)
Minimum VRAM
8GB (540p, 4s clips)
Optimal VRAM
24GB+ (720p, 4s clips)

Use Cases

From film production to social media, LTX-2 powers creative workflows across industries

Film Production
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Film & Video Production

Pre-visualization, concept videos, and VFX prototyping. Test scenes before expensive shoots.

Advertising Agencies
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Advertising Agencies

Fast iterations for pitches with LTX-2 Fast, high-fidelity delivery with Pro. One tool for the entire workflow.

Content Creators
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Content Creators

Social media videos with synchronized audio. Create engaging content faster than ever before.

Game Development
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Game Development

Cinematics, cutscenes, and trailer prototyping. Visualize game moments before full production.

How It Works

From prompt to production-ready video in four simple steps

1

Write Your Prompt

Describe the scene, action, camera movement, and audio. Be specific about visual style and timing.

2

Choose Variant

Select Fast for iteration, Pro for quality, or configure resolution and duration for your needs.

3

Generate

LTX-2 creates synchronized video and audio. Watch as your vision comes to life in seconds.

4

Refine

Use LoRAs for custom styles, upscaling for detail, or retake specific elements with precision.

Frequently Asked Questions

Everything you need to know about LTX-2

What is LTX-2?

LTX-2 is a DiT-based audio-video foundation model that generates synchronized video and audio in a single unified process. It's the first model to combine 4K video generation at 50 FPS with matching audio output, supporting text-to-video, image-to-video, and video-to-video workflows with LoRA customization.

Is LTX-2 open source?

Yes, LTX-2 is available as open weights on both GitHub and HuggingFace. You can download the model for local use, customize it with LoRAs, and integrate it into your own pipelines. The model is released under the ltx-2-community-license-agreement.

What GPU do I need to run LTX-2?

For optimal performance, an RTX 40 Series or newer GPU with 16GB+ VRAM is recommended. With 24GB+ VRAM (like RTX 3090 or 4090), you can generate 720p 24fps 4-second clips. 8-16GB GPUs can run at reduced resolution (540p) or shorter durations. The RTX 5090 with 32GB VRAM generates 720p 4-second clips in approximately 25 seconds.

How long can LTX-2 videos be?

LTX-2 can generate videos up to 20 seconds in a single generation. The LTX Platform currently supports 6, 8, or 10-second clips, with 15-second support coming soon. For longer content, you can chain multiple generations together in your editing workflow.

Does LTX-2 support ComfyUI?

Yes, LTX-2 has built-in support for ComfyUI with native nodes available in ComfyUI Manager. NVIDIA provides a detailed quick-start guide for running LTX-2 in ComfyUI, including optimized workflows for different GPU configurations.

Can I train custom LoRAs for LTX-2?

Yes, the base (dev) model is fully trainable. You can create custom LoRAs for style, motion, or identity in under an hour. The LTX-2 Trainer package provides tools for training and fine-tuning, with 10 pre-built control LoRAs available including depth, canny, and pose.

What are the limitations of LTX-2?

LTX-2 has several known limitations: (1) Not designed for factual information or accurate text generation, (2) May not perfectly match complex prompts, (3) Audio quality is lower when generating without speech, (4) Requires significant GPU resources (16GB+ VRAM recommended), (5) May occasionally produce biased or inappropriate content, (6) Maximum duration of 20 seconds per generation.

When should I NOT use LTX-2?

Consider alternatives when: your GPU has less than 12GB VRAM, you need guaranteed prompt accuracy, you're generating text-heavy or factual content, you require audio-only or video-only output, you need videos longer than 20 seconds without editing, or you're working with photorealistic human faces requiring consistent identity across scenes.

What resolutions does LTX-2 support?

LTX-2 supports native 4K (3840x2160), QHD (1440p), FHD (1080p), and HD (720p with 540p for lower VRAM). The LTX Platform supports FHD, QHD, and UHD (2160p), with HD coming soon. All resolutions support 16:9 aspect ratio, with 9:16 vertical video support coming soon.

Is there a free trial for LTX-2?

Yes, you can try LTX-2 for free via the LTX-2 Playground at app.ltx.studio. The free tier is available in 49+ countries. Additionally, since LTX-2 is open source, you can download and run the model locally on your own hardware at no cost.

Start Creating with LTX-2

Generate production-grade video with synchronized audio. Open source, customizable, and ready for professional workflows.

References & Sources

This page was created based on analysis of the following authoritative sources: