LTX 2.5 Fast
LTX 2.5 Fast is Lightricks’ speed-oriented video model. Lightricks is the Israeli company behind Facetune; LTX is their video line. This variant generates from a text prompt, or from a start frame and an optional end frame, with native audio.
Output tiers are 512p, 768p, and 1088p — the catalog’s 480p, 720p, and 1080p rows. Minimum duration is 6 seconds. There is no uploaded audio reference and no identity pack of stills.
What it's good for
A fast cinematic shot, especially when you already have opening and closing stills and want the motion between them. Also B-roll and establishing shots that only need six seconds or more of one idea. Audio is generated with the clip, not cloned from a track you upload.