# LTX 2.3 Video Generator

> LTX is Lightricks' family of video models. LTX-2 (announced October 2025, fully open-sourced in January 2026) generates synchronised audio and video; LTX-2.3 (March 2026) added a redesigned VAE and native portrait up to 1080×1920; LTX-2.5 (August 2026) added multi-shot with a consistent character and voice. The full model needs an 80 GB+ GPU to run locally. In Kenerate's studio you can run LTX 2.5 (5–20 s, up to 4K, start and end frames), LTX 2.3 (5–20 s, up to 1080p, extend) and LTX 2 — no GPU. The clips here are real LTX 2.3 outputs.

URL: https://kenerateai.com/ltx-2-3-video-generator
Publisher: Kenerate AI (https://kenerateai.com)
Last updated: 27 September 2026

## Key facts
- Longest clip: 20 s
- Top resolution: 4K · 2.5
- Open weights: Yes
- Local GPU: 80 GB+ for full model
- LTX 2.5 (Lightricks): Text or image (+ end frame) → 5–20 s · 720p–4K. 4K and long clips.
- LTX 2.3 (Lightricks): Text or image → 5–20 s · 480p–1080p · extend. Long clips; extend by up to 20 s.
- LTX 2 (Lightricks): Text or image → 5–20 s · 480p–1080p. The first LTX-2 model.

## Steps
1. Open the video studio — Pick LTX 2.5, LTX 2.3 or LTX 2.
2. Start from text or an image — LTX 2.5 also takes an end frame.
3. Write one flowing paragraph — Lightricks suggests 4–8 present-tense sentences for a single shot.
4. Pick 5–20 s and a resolution — Up to 4K on LTX 2.5, 1080p on 2.3; extend 2.3 clips by up to 20 s.

## In depth

### LTX, version by version
LTX-Video 0.9 (November 2024) was the first; LTX-2 (October 2025) added synchronised audio and native 4K and went fully open in January 2026; LTX-2.3 (March 2026) brought a new VAE and native portrait video; LTX-2.5 (August 2026) added multi-shot with consistent characters.

## FAQ
Q: What is LTX Video?
A: Lightricks' family of open-weight video models: LTX-Video, LTX-2 (with audio), LTX-2.3 and LTX-2.5.

Q: Is LTX-2 open source?
A: LTX-2 was fully open-sourced — code, weights and trainer — in January 2026, under Lightricks' own LTX model licence (not Apache 2.0).

Q: Can LTX-2 do image to video?
A: Yes — LTX 2.5, 2.3 and 2 all do image to video; LTX 2.5 also takes an end frame.

Q: How long can LTX clips be?
A: Up to 20 seconds per generation; LTX 2.3 clips can be extended.

Q: What GPU do I need for LTX-2?
A: The full model needs 80 GB+ of VRAM; distilled and fp8 versions fit 32 GB GPUs. In Kenerate's studio you need no GPU.

Q: How do I prompt LTX-2?
A: One flowing paragraph of 4–8 present-tense sentences, with camera moves described relative to the subject, per Lightricks' guide.

Q: What's new in LTX 2.5?
A: Multi-shot generation with a consistent character and voice across cuts (August 2026).

## Related pages
- Wan AI: https://kenerateai.com/wan-ai-video-generator
- AI video extender: https://kenerateai.com/ai-video-extender
- Vidu AI: https://kenerateai.com/vidu-ai-video-generator
- AI video generator: https://kenerateai.com/ai-video-generator

## Sources
- Kenerate video studio: https://kenerateai.com/app/video
- Lightricks — LTX info: https://ltx.io/llm-info
- LTX — prompting guide: https://docs.ltx.io/api-documentation/implementation-guides/prompting-guide
- Lightricks — LTX-2 open source: https://www.globenewswire.com/news-release/2026/01/06/3213304/0/en/Lightricks-Open-Sources-LTX-2-the-First-Production-Ready-Audio-and-Video-Generation-Model-With-Truly-Open-Weights.html
- LTX-Video on GitHub: https://github.com/Lightricks/LTX-Video