LTXV 2 Fast Text-to-Video

LTXV 2 Fast API Overview

LTXV 2 Fast is a state-of-the-art text-to-video AI model developed for rapid generation of high-fidelity videos with synchronized audio from textual prompts. It delivers professional-grade 1080p video outputs with cinematic detail, motion coherence, and audio ambiance suitable for creative production workflows, all optimized for fast inference and cost efficiency.

Technical Specifications

• Model Architecture: DiT (Denoising Diffusion Transformer)‍
• Max Output Resolution: 4K‍
• Max Frame Rate: 50 FPS

Performance Benchmarks

• Generation Speed: Produces 6-second 1080p videos in seconds, enabling fast turnaround times.
• Resolution & Quality: Maintains sharp texture fidelity and smooth motion even at 4K resolution.
• Audio-Video Sync: Combines synchronized audio generation with visual output without quality loss.
• Compute Efficiency: Achieves up to 50% lower compute costs compared to competitors in similar quality tiers.
• Motion Coherence: Intelligently models temporal consistency and camera movement to produce realistic videos.

Key Features

• Synchronized Audio Generation: Produces audio tracks in sync with video, including dialog, ambient sounds, and music within one coherent output.
• Fast Inference: Up to 4× faster generation of short videos compared to previous versions, perfect for rapid prototyping and content iteration.
• Efficient Resource Use: Reduced compute costs and optimized multi-GPU inference stack for scalability.
• Physical Material Accuracy: Enhanced texture and surface detail realism via new diffusion backbone training.

LTXV 2 API Pricing

• 1080p: $0.042 / sec
• 1440p: $0.084 / sec
• 2160p (4K): $0.168 / sec

Generation Code Sample

Output Code Sample

Comparison with Other Models

vs Sora 2: LTXV 2 Fast generates 4K videos with synchronized audio in up to 50 FPS, producing 6-second Full HD videos in about 5 seconds, significantly faster than Sora 2’s typical 1-2 minute generation time.

vs Veo 3.1: Both models support synchronized audio-video generation with high-resolution outputs, but LTXV 2 Fast emphasizes rapid short-clip generation with consumer GPU accessibility and cost efficiency.

vs. Kling 2.5 Turbo Pro: Kling 2.5 Turbo Pro specializes in cinematic storytelling with enhanced motion and camera controls but generally has slower inference speeds. LTXV 2 Fast focuses on fast iteration capabilities and integrated audio generation, making it suitable for quick prototyping and marketing content.

vs. Seedream 4: Seedream 4 targets ultra-realistic video generation with advanced texture and material simulation but requires higher computational resources and longer generation times. LTXV 2 Fast balances quality with speed and accessibility for diverse content creators using consumer-grade hardware.