- LTX Desktop runs the full LTX-2.3 model locally on consumer GPUs — no API calls, no cloud fees, no watermarks — at 1/5 to 1/10 the cost of cloud generation once your hardware is paid for.
- It handles text, image, audio, and video inputs in one model, with up to 4K/50fps output, complete privacy, and an optional cloud fallback when local VRAM runs out.
- Fast mode lets you iterate in seconds; Pro mode delivers final-quality output — chain workflows together at zero marginal cost in ways that would be prohibitively expensive on API-based tools.
98% of AI video companies charge per generation. LTX Desktop doesn't. Open your laptop. Generate video. Zero API calls. Zero cloud fees. Your assets stay on your machine.
If you've been waiting for local AI video generation that doesn't force you into a subscription trap, this is it. LTX Desktop is Lightricks' production-ready video engine running entirely on consumer-grade hardware. It's currently in beta, free for individuals, and it ships with LTX-2.3—a 22B parameter multimodal model that handles text, images, and audio inputs without choking your system.
This guide walks you through installation, your first generation, and the workflows that separate casual creation from professional production.
What Is LTX Desktop?
LTX Desktop is the local-first sibling to Lightricks' LTX-2 API. Same powerful Creative AI Engine. None of the cloud dependency.
Here's what you're actually getting:
Production-Ready Video on Your Machine
The LTX-2.3 model generates up to 50fps at native 4K resolution. You can produce videos up to 20 seconds in Fast mode (quicker inference) or 10 seconds in Pro mode (higher quality). Audio syncs automatically—no separate render pass, no manual alignment required. The improved VAE in 2.3 renders fine details without the oversaturation issues that plagued earlier versions.
Cost Math That Actually Works
Running LTX Desktop locally costs 1/5 to 1/10 of what LTX-2.0 costs per generation on the cloud API. Add zero marginal cost once you've paid for your GPU, and the economics flip entirely. If you're generating more than a handful of videos per month, desktop is already cheaper.
Privacy You Can Verify
Your prompts, images, and generated videos never leave your machine. No telemetry. No cloud logging. You own the output completely. For enterprises handling proprietary assets or creatives protecting client IP, this matters.
Multimodal, No Compromises
Text-to-video. Image-to-video. Audio-to-video. Video-to-video. The engine handles all of it with the same model. Better I2V quality than the previous generation, portrait support, sharper prompt understanding. You're not swapping between specialized tools—you're working with one model that's genuinely multimodal.
Optional Cloud Fallback
Running on a machine without enough VRAM? LTX Desktop can route inference to Lightricks' cloud API on demand. Your workflow doesn't break. You just pay for the generations that exceed your local capacity.
System Requirements: What You Need
LTX Desktop runs on consumer hardware. Not enterprise servers. Not cloud infrastructure. Your GPU.
Minimum Setup
- GPU: NVIDIA GPU with 32GB+ VRAM (e.g. RTX 6000 Ada, A100) for full local generation
- RAM: 16GB system memory
- Storage: 160GB free (model weights + environment)
- OS: Windows 11, macOS 13+ (Ventura — note: macOS runs via cloud API only, not local generation), Linux (Ubuntu 20.04+)
Recommended for Production Work
- GPU: RTX 4090 (24GB) or H100-class hardware
- RAM: 32GB system memory
- Storage: SSD (NVMe preferred for faster model loading)
Higher-end GPUs reduce generation time significantly. This directly impacts how you work: slower inference means you batch jobs. Faster inference means you iterate in real time.
Installation and Setup
Download
Visit the LTX Desktop page on this website. Select your operating system. Run the installer.
First Launch
The app will download the LTX-2.3 model weights (~42GB for the full bf16 model, ~20GB for the quantized fp8 variant) on first run. This happens once. It's worth the wait—you won't see that download again.
Configuration
When you launch, the app detects your GPU and presents two options: Fast or Pro mode.
Fast Mode: Lower VRAM footprint, faster inference, acceptable quality for most workflows.
Pro Mode: Higher quality, more VRAM required (16GB+ recommended), slower inference.
Pick one. You can switch later, but Pro mode requires significant headroom. Running without 32GB+ VRAM will trigger out-of-memory errors unless you're using a quantized variant.
Your First Video: Text-to-Video in Five Steps
Step 1: Write a Prompt
LTX-2.3 understands detailed prompts. You don't need magic words. Instead of: "A man walking" — write: "A man in a blue jacket walks down a rain-soaked Tokyo street at dusk, neon signs reflecting in puddles, shot from a low angle, 24mm lens perspective." The engine responds to specificity: camera angle, lens type, lighting conditions, movement.
Step 2: Set Your Parameters
Resolution: 1080p for faster iteration, 4K for final output. Framerate: 24fps (cinematic), 30fps (standard), 50fps (high motion). Duration: 5-20 seconds (Fast mode), 5-10 seconds (Pro mode). Seeds: Set a seed if you want reproducible outputs. Leave blank for variation.
Step 3: Generate
Click Generate. The app displays a progress bar. No cloud connection. No API timeout anxiety.
Step 4: Review
The video appears in your library immediately. Play it. You get audio-synced output, not a mute clip that you have to pair with music later.
Step 5: Export
Download as MP4 (H.264), ProRes (if you're color grading downstream), or PNG sequence (for compositing). No watermark. No "powered by" overlay. It's your video.
Advanced: Image-to-Video and Multimodal Workflows
Text-to-video is the starting point. Image-to-video is where LTX Desktop accelerates professional work.
Image-to-Video with Motion Control
Upload an image—a product shot, a photograph, a design mockup. Describe the motion you want: "Camera pans left, revealing the environment" or "Subtle parallax effect, depth of field shift." LTX-2.3's improved I2V quality means fine details in your source image carry through to motion.
Audio-to-Video Generation
Supply audio (voiceover, music, ambient sound). The model generates video that synchronizes to that audio's rhythm and energy. This is massive for creators working from audio-first content—podcasters, musicians, audio designers.
Chaining Workflows
Generate video A. Use a frame from video A as input to image-to-video. Refine motion and camera work. Export. Repeat. This iterative cycle—which would destroy your budget on API-based tools—costs nothing on LTX Desktop.
Performance Optimization for Consumer GPUs
Your GPU has limits. Understanding them prevents crashes.
VRAM Management
LTX-2.3 is efficient, but generating at 4K/50fps demands significant memory and requires high-end hardware — at minimum an RTX 4090, ideally A100/H100 class.
If you're hitting out-of-memory errors: drop to 1080p, lower framerate to 30fps, use Fast mode instead of Pro, reduce generation duration (10 seconds instead of 20). Batch smaller jobs. Generate five 5-second clips instead of one 25-second clip.
Speed vs Quality Tradeoff
Fast mode uses quantization tricks and inference optimizations that trade some quality for speed. For client work or final delivery, use Pro mode and let it render overnight. For iteration and feedback, Fast mode wins—you see results in seconds, not minutes.
Local vs Cloud: When to Use Which
Use LTX Desktop When: you're generating more than 5-10 videos per month (cost breakeven), your assets contain proprietary or sensitive information, you need zero latency between iteration and results, or you want to batch-generate without API rate limits.
Use Cloud API When: your hardware maxes out (VRAM exhausted, even on Fast mode), you need extreme scale (1000+ generations in a day), you're testing on unknown hardware and want fallback flexibility, or you don't want to manage model updates (cloud stays current).
LTX Desktop includes optional cloud routing—if a job exceeds your local capacity, it automatically hands off to the API. Your workflow doesn't break.
Moving Forward
LTX Desktop is production-ready beta software. That means it works. It means the team is still optimizing based on real-world usage.
What you get today: multimodal video generation on consumer hardware, 1/5 to 1/10 the cost of cloud API solutions, complete privacy and control, open-weights model (LTX-2.3 available on HuggingFace — the LTX-Video model family has amassed millions of downloads across versions).
Download it. Run it. Generate something. You'll immediately understand why local AI video changes the economics of creative production.
For advanced workflows, API documentation, and community examples, visit the LTX Desktop page.
