This Open-Source AI Video Model Just Crushed Sora
•January 27, 2026
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Why It Matters
LTE S2 democratizes high‑quality AI video creation, letting creators generate 4K, audio‑synced clips locally without costly cloud APIs, reshaping production workflows and reducing barriers to entry.
Key Takeaways
- •LTE S2 offers free, open‑source AI video generation
- •Runs on consumer GPUs with as little as 12 GB VRAM
- •Delivers native 4K video, synchronized audio, and 30‑second clips
- •Up to 18× faster than competing models on data‑center GPUs
- •Enables local pipelines, fine‑tuning, and studio integration without API limits
Summary
The video introduces LTE S2, an open‑source diffusion‑transformer hybrid that generates synchronized video and audio. Released by LTA, the model can be run locally on a single GPU with as little as 12 GB of VRAM, delivering native 4K output and clips up to 30 seconds long.
According to the presenter, LTE S2 is up to 18 times more efficient than the previous state‑of‑the‑art model (e.g., Sora), completing a 10‑second clip in roughly 15‑20 seconds on an RTX 3060. Benchmarks on data‑center H100 GPUs show 49 steps versus 2.69 steps per minute for competitors. The full repository, including 300 GB of weights, training code, and ComfyUI workflows, is publicly available.
Community members have already produced impressive results, from lip‑synced dialogues to 27‑second continuous scenes, all generated on consumer hardware. The creator highlights integrations such as a Premiere Pro plugin and control adapters for motion, camera behavior, and LoRAs, demonstrating the model’s flexibility beyond a simple API.
By removing proprietary barriers, LTE S2 turns video‑AI into a usable infrastructure for studios, VFX teams, and solo creators who need on‑premise control, unlimited generation, and seamless pipeline integration. Its efficiency and open nature could accelerate adoption of generative video across content production and lower costs dramatically.
Original Description
A new AI video generation model just dropped that is free, open source and can be ran on your own machine with as little as 12GB of VRAM. It has synced audio, high resolution output, 32nd long clips, and is up to 18 times more efficient than the next best model. Now, if you haven't heard of it
yet, it's called LTX-2. And it's not only the current best model out there, but it's open source, meaning you can download it right now and use it completely for free.
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🎞 Video Resources 🎞
Check out LTX-2: https://ltx.io/model/ltx-2
ComfyUI Setup Tutorial: https://www.youtube.com/watch?v=d1tjLXsz8Wc
Open-Source GitHub Repo: https://github.com/Lightricks/LTX-2?tab=readme-ov-file
Reddit Examples
⏳ Timestamps ⏳
00:00 | LTX-2 Model
00:40 | Stats/Specs
02:22 | Benchmarks
03:25 | Reddit Examples
07:09 | GitHub Repo/Running Locally
09:09 | Why this Matters
10:45 | My Generated Videos (LTX Studio)
Hashtags
#LTX2 #AIModel #OpenSource
UAE Media License Number: 3635141
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