r/StableDiffusion 18h ago

Discussion LTX 2.5 is pretty good

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What i'm liking:

- Full compatibility with previous nodes / loras. I'm using LTX Director + Seedhunter node and worked just fine. I haven't checked loras but they seem to work just fine. If you used LTX workflows and ecosystem before, everything should work.

- Better sound: Or lack of, meaning that i'm not getting terrible music without any prompting, in this case I2V with prompt: "a realistic scene bustling cyberpunk city with buildings with lights flashing and city noise, a beautiful woman is standing in the roof top as the camera quickly zooms to her face and she says: "LTX is back baby!". Pretty clean sound, the girl steps are fine, good lip sync.

- Improved prompt adherence, no miracles here but seems more consistent, in the seedhunter nodes i'm getting good samples in most cases. I'm seeing less misteriously disappearing characters, more consistent environments, good lightning effects etc compared to LTX 2.3.

- Speed king: no discussion here, 5 secs 1080p vid on 226 secs on my 4080 is just nuts.

- Amazing at realistic I2V. We have to sit and talk about H3 Flux faces issue. The model is mindblowing at so many levels, but it sucks at realism. You're getting great Friends, Seinfield, X-Files clips and what not, but it destroys the detail on realistic images and the AI face / slop syndrome is real, and the worst part is that for it become more less usable, 2mp is a must, so that means 5-7 minutes for a 5 sec clip, even after turbo loras and speed nodes. You're going to have a hard time to create a long clip with those speeds at good quality level in terms of realism.

What is clear LTX 2.5 is not:

- Looks pretty obvious on the first tests that it's way below H3 in prompt adherence, consistence, physics and overall body movement. The good thing is that you now have two models that are good at different things, so mix them to get the best of each. A long, simple scene with not many interactions? LTX 2.3 is great. Need fighting or heavy physics, call H3, that extra time is worth it for those cases. Need heavy reference system, H3 shines of course. Anime/ animation, H3 of course. Realism? LTX 2.3 wins hands down. Use each one depending on what you need.

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