LTX 2.3 is an open-source AI video generator from Lightricks that converts text descriptions or images into high-fidelity videos with synchronized audio, supporting up to 4K resolution and native portrait mode.
What is LTX 2.3?
LTX 2.3 is a video generation model built on a Diffusion Transformer (DiT) architecture, developed by Lightricks. It takes either a text prompt or an image as input and produces a video clip with matching audio, resolution up to 3840×2160 at 24-50 FPS, and clip lengths up to 20 seconds. The platform runs entirely in the browser with no GPU required.
Key Features
- 4K Resolution & High Frame Rate — Generates videos up to 3840×2160 at 24-50 FPS, ensuring production-ready quality.
- Synchronized Audio — Automatically generates ambient sound or music that matches the video content.
- Native Portrait Mode — Supports 9:16 aspect ratio for vertical social media videos without cropping.
- Text-to-Video & Image-to-Video — Accepts both natural language descriptions and uploaded images as input.
- 4x Larger Text Connector — Improved prompt adherence for complex scenes, camera angles, and timing.
- Open-Source Model — Based on the publicly available DiT model, reducing vendor lock-in.
- Fast and Pro Modes — Fast mode for quick iterations, Pro mode for final-quality output.
Who is it for?
- Social media creators producing TikToks, Reels, or Shorts with vertical 9:16 video.
- YouTubers and long-form producers needing b-roll footage quickly from text descriptions.
- Educators and course creators visualizing complex concepts without animation skills.
- E-commerce teams turning product photos into dynamic demo clips for ads.
- Indie filmmakers using the tool for pre-visualization and storyboard animation.
What can you do with LTX 2.3?
- Generate cinematic product reveals from a text prompt for marketing campaigns.
- Create nature documentary clips with realistic motion and synchronized ambient audio.
- Animate concept art into fluid video sequences using image-to-video.
- Produce branded content with improved text rendering for logos or on-screen text.
How does LTX 2.3 work?
- Write your prompt — describe the scene, camera movement, lighting, and mood, or upload a reference image.
- Pick settings — choose aspect ratio (16:9, 9:16, 1:1), clip length (up to 20 seconds), and quality mode (Fast or Pro).
- Generate — the DiT model processes input and outputs video with synchronized audio in a single pass.
- Preview and download — watch the result in-browser; tweak and regenerate until satisfied, then download in high resolution.
FAQ
Is LTX 2.3 free to use?
Yes, there is a free tier available. You can generate videos without a credit card, though usage may be limited.
What makes LTX 2.3 different from LTX 2?
LTX 2.3 features a redesigned VAE, a 4x larger text connector, native portrait mode support, and improved synchronized audio generation.
Can I use LTX 2.3 generated videos commercially?
Yes, the open-source model allows commercial use of generated content.
What resolution and frame rate does LTX 2.3 support?
It supports up to 3840×2160 (4K) at 24-50 FPS.
How long can a single clip be?
Maximum clip length is 20 seconds per generation.
