LTX-2.3 Fast is a speed-optimized variant of Lightricks' LTX-2.3 video generation model. It is designed for high-speed, cost-effective generation of synchronized audio and video in a single pass. It supports up to 20-second clips, native 9:16 portrait and 16:9 aspect ratios, and resolutions up to 4K. Delivering significantly faster inference than the Pro version, it is ideal for rapid prototyping, batch generation, and short-form social media content.

LTX-2.3 is a DiT-based audio-video foundation model designed to generate synchronized video and audio within a single model. It brings together the core building blocks of modern video generation, with open weights and a focus on practical, local execution.

LTX-2.5 Fast is an accelerated endpoint for Lightricks' LTX-2.5 video generation model. Designed for high-speed text-to-video and image-to-video workflows, it trades a degree of rendering fidelity for significantly faster inference speeds. It supports up to 20-second clips, 4K resolution output, and native synchronized audio generation, making it ideal for rapid prototyping and high-throughput production.

LTX-2.5 Pro is the quality-optimized API endpoint of Lightricks' LTX-2.5 audio-video model. It utilizes Diffusion Fidelity Rendering to allocate maximum compute to complex scenes, ensuring high pixel quality, sharp faces, legible text, and seamless multi-shot continuity. It is designed for professional text-to-video and image-to-video workflows with synchronized native audio.

Model	Category	Input	Output	Context	Pricing
Ligtricks: LTX 2.3 Fast fc656f9d602e4d39b2819bcdb90ab666	video	text, image, audio	video	2K	$0.0300 / sec
Ligtricks: LTX 2.3 Pro c79285cd684448e0b8bcd87b9650005d	video	text, image, audio	video	2K	$0.0400 / sec
Ligtricks: LTX 2.5 Fast b1bdeb935df84719aaf317d89578b2b0	video	text, image, audio	video	2K	$0.0900 / sec
Ligtricks: LTX 2.5 Pro ed3a80b1d1ab4183b7d8ecb314632eb2	video	text, image, audio	video	2K	$0.1200 / sec

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