Duix (formerly HeyGem) is the open-source HeyGen clone — it clones a face from a short video and re-lip-syncs it to any audio, offline on an NVIDIA card. We installed it and ran it. Here’s the honest result.
InfiniteTalk promises infinite-length talking video from a portrait and audio, running in ComfyUI. It looks very good — but on a 32GB card the ‘infinite’ part isn’t practical yet. Here’s the honest state.
LongCat animates a whole body — gestures, lean, face, mouth — from audio, locally, for free. Long takes in one job. It’s our pick for a full-body local host, with two honest caveats: a quiet background, and drift on very long takes.
LTX’s native audio dub is the highest-resolution lip-sync we’ve run locally — but the generative mode invents a made-up language unless you wire the true audio-driven path. Here’s how it works and where it slips.
Sonic makes lips sync from an image and audio — but it regenerates the whole face every frame, so the eyes roll, irises drift, and teeth get reinvented. Here’s why it’s unshippable for a recurring character.