by Lightricks
LTX-2 19B is the FIRST open-source model generating synchronized 4K video AND audio in a single pass. Native 4K at 50fps with expressive sound, accurate lip sync, and high audio fidelity. Runs locally on RTX 4090.
Max Duration
20s
Max Resolution
4K
Audio Sync
Yes
Provider
Lightricks
Drop-in replacement for OpenAI API. Just change the base URL.
Only pay for actual GPU compute time. No idle costs.
99.9% uptime SLA, SOC 2 compliant, dedicated support.
Scales from zero to thousands of requests automatically.
See how much you'd save running LTX-2 19B on Fleek
| Model Name | LTX-2 19B |
| Default Duration | 10 seconds |
| Max Duration | 20 seconds |
| Default Resolution | 1080p |
| Max Resolution | 4K |
| Audio Sync | Yes - synchronized audio generation |
| GPU Time/Second | 10s compute per 1s video |
| Provider | Lightricks |
| Release Date | Jan 6, 2026 |
| License | Lightricks Community (free <$10M ARR) |
| HuggingFace | https://huggingface.co/Lightricks/LTX-2-19B |
Join the waitlist for early access. Start free with $5 in credits.