LTX, the open world model company spun out of Lightricks, has released LTX-2.5, the newest version of its open-weights video and world model, arriving natively integrated into ComfyUI through a day-one launch partnership.
The model is available as open weights on Hugging Face, inside ComfyUI, and through the LTX API for teams that want managed generation. It is free to use for organizations under $10M in annual recurring revenue; larger companies negotiate a license. LTX says its models have passed 33 million downloads, making the LTX family the most-used open world model line on the market.
LTX-2.5 rebuilds nearly every stage of the generation pipeline. It adds a new diffusion video decoder that reduces visual artifacts in high-motion footage and reconstructs fine detail like text and faces, native multishot generation that holds character, scene, and voice consistent across cuts, a custom Gemma 4 language backbone with a dedicated prompt enhancer, and a pretrained checkpoint tuned for physical AI and robotics.
The company claims roughly one-eighth the cost and one-seventh the render time of comparable models, with output running on hardware from data center GPUs down to a Mac. Checked against published rates, LTX-2.5 generates 720p video with audio at $0.09 per second on its Fast tier, putting a 10-second clip at $0.90, about one-quarter the cost of full Veo 3.1 and half of FLUX 3 Video.
The release is a bet that open weights, not closed APIs, will win the video and world model market. Both LTX and ComfyUI are positioning the launch around the growing ecosystem of developers who prototype open generative media.
