LTX 2.3 AI Video Generator

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?

1. Write your prompt — describe the scene, camera movement, lighting, and mood, or upload a reference image.
2. Pick settings — choose aspect ratio (16:9, 9:16, 1:1), clip length (up to 20 seconds), and quality mode (Fast or Pro).
3. Generate — the DiT model processes input and outputs video with synchronized audio in a single pass.
4. 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.