LTX
Open video model with sound and 4K, free to download.
FreeOpen sourceRuns on your PC
- Best for
- Open video with sound, big GPU
- On your PC
- Some setup
- Works on
- Windows, Linux, API
- License
- LTX-2.x Community (free under $10M yearly revenue)
What’s good
- Makes picture and sound together, up to 4K
- Official ComfyUI templates and training tools
- Most downloaded video model on Hugging Face
Downsides
- Official minimum is a 32 GB NVIDIA card
- Quality trails the closed leaders by a wide margin
The details.
- For developers
- About $0.13 per second (LTX-2.5 Fast, per Artificial Analysis)
- Version
- LTX-2.5Released 2026-08-11
- Open source
- Yes, LTX-2.x Community (free under $10M yearly revenue)
- Made by
- Lightricks
- Website
- ltx.io
How it ranks.
- Artificial Analysis Text-to-Video (LTX-2.5 Fast)#25 · score 9442026-11-05
- LMArena Text-to-Video (LTX-2 19B)#43 · score 11562026-11-05
Can I run it myself?
Yes. Some setup: download a model inside an app.
Use ComfyUI.
- You need
- NVIDIA card with 32 GB (RTX 5090); FP8 and offload modes for less
- Setup
- Some setupDownload a model inside an app
- Laptop, 8 GBToo small
- PC, 16 GB+Too small
- Mac, 16 GBToo small
- Mac, 32 GBToo small
- Mac, 64 GB+Too small
- PC, 8 GB GPUToo small
- PC, 12 GB GPUToo small
- PC, 16 GB GPUToo small
- PC, 24 GB GPUToo small
- WorkstationRuns