It makes a face in a photo or video speak, with the mouth moving to the words. In Lip Sync Studio you either type the words or bring a voice track, then pick the model that animates the face.
Can I use my own voice?
Yes. Switch to Voice, then upload audio or record in the browser. MP3, WAV, M4A voice memos, and the sound of a video all work. Photo models like OmniHuman 1.5, Kling Avatar 2.0 and VEED Fabric make the photo speak your track; Kling LipSync and Sync Lipsync 3 re-voice a video you already have.
Do I need a voice recording?
No. Type the script and every model works. Veo 3.1 Lite, Veo 3 Fast, WAN 2.5, Happy Horse 1.1, Kling 2.6, Kling 3 Pro, FLUX 3, Veo 3, Veo 3.1 voice the words themselves; the voice-track models get a voice made from your script first, from 21 ElevenLabs voices you can preview.
Which model should I pick?
For a typed line, Veo 3.1 Lite is the least expensive, Veo 3.1 has the most natural delivery, and Happy Horse 1.1 speaks many languages for up to 15 seconds. To make a photo speak a voice track, Kling Avatar 2.0 costs the least per second and OmniHuman 1.5 adds the most gesture. To re-voice a clip, Kling LipSync bills in 5-second blocks and Sync Lipsync 3 handles clips up to 4K. The comparisons above run the same photo on each.
How much does lip sync cost?
Each model has its own price per second, in credits, and the exact price is on the Generate button before you start. A voice made from your script adds a small text-to-speech charge. Unused credits roll over, and failed videos are free. Every model’s price is on the price sheet.
What languages can it speak?
Write the script in the language you want spoken. Happy Horse 1.1 is built for multilingual speech, and the Spanish examples above were made with it and with a Spanish voice track. Kling speaks English and Chinese. With your own voice track any language works, because the mouth follows the audio.
How long can a video be?
Typed lines run 3 to 20 seconds depending on the model: Veo up to 8, Happy Horse and Kling 3 Pro up to 15, FLUX 3 up to 20. With a voice track, the photo models make a video as long as the audio, up to 60 seconds (30 seconds for OmniHuman at 1080p). Kling LipSync takes clips of 2 to 10 seconds and Sync Lipsync 3 up to 60.
Can I lip sync a video I already have?
Yes. Upload the clip and add the new voice track, or type the new line and pick a voice. Kling LipSync needs a 720p or 1080p clip of 2 to 10 seconds; Sync Lipsync 3 takes up to 60 seconds and 4K. Only the mouth changes, so you can fix a line or dub a clip into another language.
What can’t I make?
Only use faces and voices you have the right to use: your own, people who agreed, or characters you created. Don’t make someone appear to say something they didn’t say. The models decline some requests, for example ones involving minors or sexual content, and a declined video is never charged.
