Lightricks LTX 2.3 Image To Video Fast

Fast image-to-video generation for rapid creative iteration, with extended duration options and optional audio.

Model Overview

LTX 2.3 Image-to-Video Fast is tuned for speed while retaining key motion controls. It supports the same start/end frame workflow as the standard image-to-video path, with broader duration options for quick iteration loops.

Best At

• Rapid experimentation from a reference image.
• Fast drafts for storyboard and motion exploration.
• Transition generation between start and end frames.

Limitations / Not Good At

• Prioritizes iteration speed over maximum fidelity.
• Longer duration presets have stronger constraints in some FPS/resolution combinations.
• Complex scenes may still require prompt tuning and retries.

Ideal Use Cases

• Early-stage creative direction and ideation.
• Quick social/video concept drafts from stills.
• Comparing multiple motion directions before final render.

Input & Output Format

• Input: required prompt and image_url; optional end_image_url, aspect_ratio, resolution, duration, fps, and generate_audio.
• Output: generated video URI returned on response.

Performance Notes

• Best for fast ideation loops and branching experiments.
• Longer duration presets can benefit from conservative FPS/resolution choices.
• Use the standard model when maximum final polish is the priority.