{"path":"/compare/ai-music-video-generator-lip-sync","title":"AI music video generator test: MiniMax H3 vs Wan 3.0 vs Kling 4.0 on a two-singer rap | Fourth Feed","description":"We gave four video models the same rap duet and two portraits. Only H3 and Wan 3.0 sing your actual song. H3 got the mouths right, Wan got the light.","as_of":"2026-11-11","kind":"compare","content":{"compare":{"slug":"ai-music-video-generator-lip-sync","title":"AI music video generator test: MiniMax H3 vs Wan 3.0 vs Kling 4.0 on a two-singer rap","description":"We gave four video models the same rap duet and two portraits. Only H3 and Wan 3.0 sing your actual song. H3 got the mouths right, Wan got the light.","query":"ai music video generator","asOf":"2026-11-11","intro":"Most AI music video generators on Google’s first page take a song and give you visuals that move to it. We wanted something narrower: two people, a man and a woman, each rapping their own lines of a song we already had, with the mouths on the words. So on 2026-11-11 we ran one 15-second rap duet and two portraits through four video models. First try, one clip with the whole duet as reference audio, failed in both models that accept a song. MiniMax H3 and Wan 3.0 both kept our audio exactly, but they did not know who sings which line, so the woman’s mouth moved on his words and the other way round. What fixed it was splitting the song by voice. We found each singer’s lines from the pitch of the vocal (his around 130–200 Hz, hers around 230–380 Hz), cut the audio there, and made one 8-second clip per singer. The prompt for each clip says only that person raps and the other keeps their mouth closed. Then we joined the clips and laid the full song over them. With that, MiniMax H3 had the best lip sync of the four. Wan 3.0 was close but looser. Through the APIs, each 8-second clip cost between $0.19 and $0.32, depending on the model and resolution. The surprise was the light. Both got the same prompt, which said warm amber walls. H3 made a dim, moody studio. Wan made it bright and sunny. Neither prompt asked for either. If you want H3’s mouths with Wan’s light, write the light into the prompt. Two models can’t take your song at all. H3 Max Turbo has no audio input. Kling 4.0’s Omni reference accepts audio, but only as a voice reference: it borrows the voice and sings its own melody and timing. Both rapped our lyrics in their own way, so once our track went on top, the mouths were off. Their upside: starting both clips from the same first frame kept the room the same across the cut. H3 and Wan rebuilt the room for each clip. We read that as a camera change, and it works fine in a music video.","video":{"src":"/compare/ai-music-video-generator-lip-sync-four-models.mp4","poster":"/compare/ai-music-video-generator-lip-sync-four-models.jpg","captions":"/compare/ai-music-video-generator-lip-sync-four-models.vtt","caption":"The same 15-second duet through four models, two clips each (his part, then hers), joined and played with our song. Top row: MiniMax H3 and Wan 3.0, which used our audio as the reference. Bottom row: H3 Max Turbo and Kling 4.0, which sang their own version from the lyrics in the prompt, so their mouths do not match this audio."},"ai":[],"ours":{"name":"Rap Duet","url":"https://rapduet.fun","text":"If you want a two-person rap video without splitting the song and joining clips yourself: we are building Rap Duet from this test. Two photos in, one duet video out; it is not taking orders yet."},"author":"maya-brooks","sponsored":false,"tools":["minimax.io","wan.video","kling.ai","hedra.com","runway.com","revid.ai","neuralframes.com","freebeat.ai","solmi.ai","openart.ai","vidu.com","pixverse.ai"],"tested":{"minimax.io":{"result":"Two models. H3 in reference mode with two portraits and one singer’s audio, 768p, about 3.5 minutes per 8-second clip: it kept our audio unchanged and had the best lip sync of the four. A single 15-second clip with the whole duet put the wrong mouth on some lines. H3 Max Turbo from a first frame and a prompt with the lyrics, 480p, under a minute per clip: it has no audio input, so it rapped its own version and the mouths did not match our song. Starting both Turbo clips from one image kept the room the same across the cut.","checkedAt":"2026-11-11"},"wan.video":{"result":"Wan 3.0 in reference mode with two portraits and one singer’s audio, 480p, about 2 minutes per 8-second clip. Our audio came back unchanged. It gave the brightest, sunniest picture of the four from the same prompt that gave H3 a dim studio. Lip sync was close to H3’s but looser, and it rebuilt the room for each clip.","checkedAt":"2026-11-11"},"kling.ai":{"result":"Kling 4.0 Omni reference on kling.ai: 720p, 80 credits per 8-second clip, a few minutes each. The audio slot is a voice reference, not a song, so it sang its own melody; with our track on top the mouths were off. Starting both clips from one image kept the room the same.","checkedAt":"2026-11-11"}}},"author":{"id":"maya-brooks","name":"Maya Brooks","bio":"Maya works on Rap Duet, which turns two photos and a song into a video of two people rapping their own parts.","product":{"name":"Rap Duet","url":"https://rapduet.fun"}},"rows":[{"tool":{"domain":"minimax.io","name":"MiniMax","url":"https://minimax.io/","summary":"Model lab behind the Hailuo video and MiniMax language models, with consumer apps and an API.","category":["video-api"],"tags":["video-model-api"],"logo":{"file":"/logos/minimax.io.webp","fetchedAt":"2026-11-08"},"source":["research:sitedata-2026-10-18"],"site":{"title":"MiniMax","description":"Building AGI with our mission Intelligence with Everyone. 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