LTX-2.3
the best open-weight video model, with a licence that isn't what you think
twenty-second clips at up to 4K with genuine single-pass audio, running on your own hardware — just don't believe anyone who tells you it's apache 2.0.
ltx-2.3 is a 22-billion-parameter audio-video model from lightricks, and it is comfortably the strongest open-weight option here: leader among open weights on artificial analysis' image-to-video with audio board, twenty-second clips — the longest of any mainstream model — up to 4K, and 24 or 48fps.
it generates synchronised video and audio in a single forward pass, which most open models still can't do at all.
the description above is ours, condensed from the ranking. pricing moves — check it on the vendor's own page before you rely on it.
- category
- ai video models
- pricing
- free to self-host; $0.06 / second at 1080p on fal
- website
- github.com
twenty-second clips at up to 4K with genuine single-pass audio, running on your own hardware — just don't believe anyone who tells you it's apache 2.0.
we researched this category against vendors' own pricing pages and licence files. that is where this line comes from — not from the vendor, and not from anything they paid for.