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LTX 2.3 AI Video Generator

Experience LTX 2.3 online on klingaio.com. Developed by Lightricks, this friendly and powerful open source model supports text to video, image to video, and audio to video workflows. Create high fidelity clips up to 20 seconds with native audio sync, 1080p to 4K resolution, and professional tools like extend video and retake video.

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The generated video will appear here.

You can view your videos from the "My Creations" menu.

What is LTX 2.3?

We are thrilled to introduce LTX 2.3, the latest open source multimodal AI video generation model developed by Lightricks. Powered by a highly optimized 20.9B parameter Diffusion Transformer (DiT) architecture, it functions as a single base model capable of producing high fidelity videos together with synchronized audio. It is humbly designed to be a true production grade creative engine for developers, studios, and businesses to build real workflows. The LTX 2.3 engine accepts text, image, and audio inputs, and seamlessly integrates professional editing features like extend video and retake video. Best of all, it is fully open source under the Apache 2.0 license, allowing for local execution and maximum privacy.

All Features of LTX 2.3

Native Audio and Video Synchronization

Instead of treating sound as an afterthought, LTX 2.3 generates perfectly synced audio alongside your video. It outputs crisp dialogue, environmental sounds, and sound effects in a single step, ensuring your visual elements and rhythm stay perfectly aligned.

    Native 1080p, 4K Upscaling and 9:16 Support

    The engine generates native 1080p resolution outputs which can be scaled to 4K using the built in latent upscaler. Additionally, LTX Video 2.3 features native training for 9:16 portrait dimensions, providing true vertical formatting for social media without relying on cropping.

      Last-Frame Interpolation for Smoothness

      To ensure your visual narratives flow naturally, the model incorporates deep last-frame interpolation. This technology helps transitions and scene extensions remain smooth, significantly reducing jarring visual jumps and artifacts.

        Open Source Freedom and Local Execution

        We believe in creative freedom. The model weights and training code are entirely open source. You can run LTX 2.3 completely locally using tools like LTX Desktop or ComfyUI, keeping your data 100% private.

          Supported Video Generation Modes in LTX 2.3

          LTX 2.3 offers a versatile suite of generation endpoints to accommodate any creative input you might have. Here is a friendly breakdown of the modes you can explore directly on klingaio.com.

          Text to Video

          Simply type your creative idea, and the text to video mode will bring it to life with stunning clarity and motion. A fast endpoint is also available for rapid prototyping and idea validation.

          Image to Video

          Transform your static images into dynamic, moving sequences. The image to video feature maintains high fidelity to your original picture, closely preserving textures, facial details, and structure.

          Audio to Video

          Upload an audio track, and let the AI generate a video that matches the rhythm and tone. The audio to video mode is highly recommended for music videos, podcast highlights, and dialogue driven scenes.

          Extend Video

          Do you need your story to last a bit longer? The extend video mode seamlessly adds more duration to your existing clips while maintaining perfect consistency in style and character movement.

          Retake Video

          This mode acts as your local film editor. By setting a specific start time and providing a new prompt, you can use retake video to precisely rewrite or replace certain parts of your footage while keeping the core composition intact.

          Key Upgrades and Improvements Compared to LTX-2

          LTX 2.3 represents a massive, production focused engine upgrade from its predecessor. We have carefully listened to the community to bring you these vital improvements.

          Sharper Visual Details

          Thanks to a completely rebuilt VAE and refined latent space, you will notice much cleaner edges, highly realistic hair textures, and a massive reduction in compression artifacts.

          Stronger Prompt Comprehension

          Featuring a text connector that is four times larger, LTX AI 2.3 understands complex spatial relationships, multiple subjects, and specific camera movements without requiring you to over engineer your prompts.

          Cleaner Audio Quality

          The audio engine has received a major overhaul with a brand new vocoder. Background noise and silent gaps have been drastically minimized, providing clean and broadcast ready sound.

          Enhanced Motion Stability

          In previous versions, the image to video mode sometimes suffered from a freeze frame effect. The new engine solves this by introducing robust, dynamic motion that looks remarkably natural.

          Suitable Scenarios for LTX 2.3

          Because it is built as a stable production engine rather than a mere research demo, LTX 2.3 fits perfectly into numerous real world applications.

          Professional Studio Production

          With its reliable consistency and ability to precisely edit via retake video, it is an excellent choice for crafting brand assets, advertisements, and cinematic pre visualizations.

          Audio Driven Storytelling

          If you produce podcasts or virtual avatar content, the audio to video capabilities will automatically sync your voice tracks to realistic visual movements.

          Social Media Vertical Content

          Native 9:16 support makes it incredibly convenient for creators aiming to produce engaging clips for TikTok, YouTube Shorts, or Instagram Reels.

          Privacy Sensitive Environments

          For enterprises handling confidential data, LTX Video 2.3 can be run entirely offline using local hardware, completely avoiding the risks associated with cloud API uploads.

          How to Generate Videos with LTX 2.3 in 3 Steps

          Step 1

          Select Mode and Provide Input

          Start by choosing how you want to guide the AI. You can type a prompt for text to video, upload a picture for image to video, or provide a sound file for audio to video.

          Step 2

          Configure Your Settings

          Set your desired resolution (up to 4K/2160p), duration (up to 20 seconds), frame rate (24 or 48 FPS), and aspect ratio. If editing an existing clip, select extend video or retake video.

          Step 3

          Generate and Download

          Click the generate button and kindly let LTX 2.3 process your request. Preview the result with native audio, refine it if necessary, and download your high quality MP4 file.

          Frequently Asked Questions