Install LTX Desktop on Windows
LTX Desktop runs on Windows 10 and 11 (64-bit). On machines with a supported NVIDIA GPU (32GB+ VRAM recommended), generation runs locally. On other hardware, it uses LTX API mode.
How to install
- Download the Windows installer.
- Run LTX-Desktop-Setup.exe.
- If Windows shows a SmartScreen prompt, click More info then Run anyway.
- Follow the installer steps and launch LTX Desktop.
What happens on first launch
LTX Desktop will download model weights and required components on first launch. This requires internet access and at least 160GB of free disk space.
Once the download completes, LTX Desktop detects your GPU automatically. If your machine has a supported NVIDIA GPU with 32GB+ VRAM recommended, local generation will be available. Otherwise, the app runs in API mode and will prompt you for an LTX API key.
To speed up generation and save memory, it's recommended to add a free LTX API key for text encoding even on local-mode machines.
Troubleshooting launch errors
If the app fails to start, try running it as administrator (right-click > Run as administrator). For persistent launch errors, see Fix “Python backend exited with code 1” or Fix errors when starting or installing LTX Desktop.