What output modes does LTX-2 provide?

LTX-2 provides three performance modalities: Fast (for quick ideation), Pro (for review-level outputs), and Ultra (for full-fidelity production render).

Does LTX-2 support synchronized audio and video generation?

Yes — LTX-2 simultaneously generates both visual frames and corresponding audio in one unified pass, aligning motion, dialogue, soundtrack and ambient audio.

What hardware is required to run LTX-2?

While ultra-high fidelity (4K/50fps) requires higher-end or multi-GPU infrastructure, LTX-2 is optimized to run on consumer-grade GPUs for its Fast/Pro modes, democratizing professional-quality video generation.

LTX-2 – Open-Source 4K AI Video Foundation Model

Name: LTX-2
Brand: Lightricks

Overview

LTX-2 is the latest innovation from Lightricks Ltd, announced October 23 2025. :contentReference[oaicite:0]{index=0} It is designed as a full production-ready, open-source video foundation model — combining high-fidelity visuals, synchronized audio, flexible performance modes, and broad integration support. :contentReference[oaicite:1]{index=1} By making this technology accessible to creators of all sizes, LTX-2 democratizes professional video creation and re-defines what’s possible with generative AI. :contentReference[oaicite:2]{index=2}

Key Features

Synchronized Audio & Video

LTX-2 generates audio and video in one unified pass — motion, dialogue, ambience and music are naturally aligned, avoiding separate audio stitching or manual syncing. :contentReference[oaicite:3]{index=3}

Native 4K at Up to 50fps

The model supports native 4K resolution with frame rates up to 50fps, delivering cinematic fidelity that meets VFX and film-production standards. :contentReference[oaicite:4]{index=4}

Three Performance Modes: Fast, Pro & Ultra

Match the mode to your creative need — Fast for ideation, Pro for review-ready output, and Ultra for final delivery-grade production. :contentReference[oaicite:5]{index=5}

Consumer-Grade Hardware Friendly

Despite its high fidelity, LTX-2 is designed to run efficiently on consumer-grade GPUs, lowering the barrier to entry for professional video creation. :contentReference[oaicite:6]{index=6}

Open Source & Extensible Ecosystem

The model weights, codebase, benchmarks and tooling are released openly, enabling developers, researchers and creators to extend, fine-tune and integrate. :contentReference[oaicite:7]{index=7}

Workflow Integration & Creative Control

Supports text-to-video, image-to-video, multi-keyframe conditioning, 3D camera logic, LoRA fine-tuning and plug-ins for major UI platforms. :contentReference[oaicite:8]{index=8}

Technical Specifications

Here are some of the key technical highlights of LTX-2:

Supports input modalities: text prompt, image reference, depth map, video snippet, audio sample. :contentReference[oaicite:9]{index=9}
Output modes: Fast, Pro, Ultra with varying resolution, frame-rate and compute cost trade-offs. :contentReference[oaicite:10]{index=10}
Resolution & frame rate: Native 4K (3840×2160) up to 50 fps; also supports lower resolutions for rapid iteration. :contentReference[oaicite:11]{index=11}
Clip duration: Up to 10 seconds (and longer in future releases) of continuous synchronized-audio video. :contentReference[oaicite:12]{index=12}
Compute efficiency: Up to ~50 % lower compute cost compared with competing models, thanks to multi-GPU inference stack. :contentReference[oaicite:13]{index=13}
Architecture: Built on a DiT (Diffusion-Transformer) hybrid architecture with space-time modeling and multi-keyframe conditioning. :contentReference[oaicite:14]{index=14}

Use Cases & Workflows

LTX-2 is optimized for a wide range of creative workflows, including:

Storyboarding & Pre-visualization: Quickly generate cinematic rough cuts from text or images to validate concept, camera movement and audio sync.
Advertising & Brand Content: Produce 4K promotional films, social clips and branded assets with high efficiency, cutting turnaround time and cost.
Film & TV Production: Enable indie filmmakers and VFX studios to generate high-quality sequences, animate scenes or create concept shots with production fidelity.
Gaming & Real-time Experiences: Use multi-keyframe, depth and camera controls to generate game cut-scenes, real-time content and immersive storytelling sequences.
Image → Video & Text → Video Pipeline: Animate still or sequence reference media into full video clips with synchronized audio, opening new creative pathways for motion design and visualization. :contentReference[oaicite:15]{index=15}

Why LTX-2 Stands Out

Compared to other video generation models, LTX-2 delivers several advantages:

Integrated synchronized audio-video generation in one pass — most others require separate audio and manual post-synchronization. :contentReference[oaicite:16]{index=16}
Native 4K and high-fps output — enabling cinema-grade material, not just social-media clips. :contentReference[oaicite:17]{index=17}
Open-source ecosystem — granting researchers and creators access to weights, code and community tooling. :contentReference[oaicite:18]{index=18}
Optimized for consumer-hardware — lowers the barrier so smaller teams and individuals can create professional results. :contentReference[oaicite:19]{index=19}
Flexible performance modes — from rapid iteration to final delivery without switching platforms. :contentReference[oaicite:20]{index=20}

Creator & Industry Feedback

“LTX-2 can generate a fully original six-second HD video in just five seconds of compute time. Though it also supports 4K, the speed and cost-effectiveness mark a real turning point for AI-video.” — TechRound :contentReference[oaicite:21]{index=21}

Creators, studios, and agencies are already exploring how LTX-2 integrates into their workflows — from ideation to final render — citing increased speed, novel creative freedom and reduced costs.

Frequently Asked Questions

Is LTX-2 free to use?

Core model access via the LTX-2 API may include usage tiers: free for initial testing (Fast mode), with paid tiers for higher fidelity (Pro/Ultra) or enterprise licensing. Refer to official pricing. :contentReference[oaicite:22]{index=22}

What kinds of input can I provide?

You can use text prompts, upload an image reference, supply a depth-map or short video snippet, and optionally add audio cues. The model will generate a fully synchronized video output. :contentReference[oaicite:23]{index=23}

When will model weights be available?

The weights, codebase and benchmarks are scheduled for open-source release later in 2025. Until then, access is via API and platform integrations. :contentReference[oaicite:24]{index=24}

What hardware do I need?

For rapid iteration (Fast/Pro modes), consumer-grade GPUs suffice. For Ultra mode (4K@50fps full fidelity) you may require higher-end GPUs or multi-GPU setups. :contentReference[oaicite:25]{index=25}

LTX-2 – The Open-Source 4K AI Video Foundation Model