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sync.

AI lipsync and visual dubbing models that match a speaker's mouth to new audio, available in a studio, API and plugins.

sync. is an AI lipsync and visual dubbing service from Synchronicity Labs. sync. takes an existing video and a new audio track, whether cloned, generated or recorded, and re-animates the speaker's mouth to fit it. It is used through a web studio, a REST API with SDKs, a Premiere plugin or a ComfyUI node, and is billed by usage.

Best for Post-production teams, localisation studios and developers who need to dub or re-voice existing footage with matching lip movement.

sync. website home page
Screenshot of sync.so, captured 9 Oct 2026
Platforms
Web, API, Plugin
Pricing model
Subscription
API
Yes
Made by
Synchronicity Labs Inc.
Added

Last verified: . Information taken from sync.so.

What is sync.?

sync. is a set of AI models and tools for lipsync and facial reanimation, made by Synchronicity Labs Inc. Given a video and replacement audio, the models redraw the mouth so that speech and picture match, and the site says this works on films, podcasts, games and animation. The newest model is named sync-3; lipsync-2-pro, lipsync-2 and react-1 are also listed. The company highlights difficult footage: faces partly hidden by objects, several faces in a shot, changing camera angles, low light, fast movement and 4K ProRes material. In the web studio a user uploads a clip, supplies a voice by cloning, generating or reusing audio, and receives the synced result without a timeline. Developers reach the same models through an API, and plugins exist for Premiere and ComfyUI. Plans add a monthly fee to per-second usage charges.

Key Features

Lipsync Models

Offers several models, including sync-3 and lipsync-2-pro, priced per frame so that quality and cost can be traded off.

Hard-Shot Handling

Targets footage with occluded faces, multiple speakers, moving cameras, low light and rapid dialogue.

Web Studio

Provides lite, assistant and advanced ways of working; the simplest takes a video and a voice and returns the synced clip.

Voice Options

Lets you clone a voice, generate speech from text through partner integrations or keep the audio already in the clip.

API and Plugins

Exposes the models through a REST API with SDKs, a batch API on the top tier, a Premiere plugin and a ComfyUI node.

Verification

Embeds a proprietary watermark so that an uploaded video can be checked for modification by sync. technology.

How sync. works

  1. Upload a video

    Drop the clip whose speech you want to change into the studio.

  2. Give it a voice

    Clone a voice, generate speech or use the audio already in the clip.

  3. Get the lipsync

    The model returns the video with mouth movement matched to the audio.

Use Cases

Dubbing Films and Series
Replace dialogue with another language and adjust the actors' mouths to it.
Fixing a Line in Post
Change a few spoken words without bringing the actor back for a reshoot.
Localising Marketing Videos
Produce versions of one presenter video for several language markets.
Lipsync Inside an App
Call the API from your own product to sync user-supplied video and audio.
Animated and Game Characters
Apply spoken audio to characters in animation or game footage.

Things to know

Two-part pricing
Each plan has a monthly fee, and every second of generated video is charged separately at a rate set by the model.
Limits by tier
Video length, simultaneous jobs and the number of voice clones all rise with the plan.
Watermark on the entry plan
Watermark removal is listed from the Creator plan upwards.

FAQs

What is sync.?

sync. is an AI lipsync and visual dubbing product that changes a speaker's mouth movement in a video to match new audio.

What is sync. used for?

sync. is used for dubbing video into other languages, replacing dialogue in post-production and adding lipsync to apps through an API.

How much does sync. cost?

For sync., an Enterprise option is handled by sales.

Does sync. have an API?

Yes. sync. provides a REST API and SDKs on every listed plan, and a batch API on the Scale plan.

Does sync. add a watermark?

sync. lists watermark-free output from the Creator plan upwards. Separately, its verification tool can detect whether a video was altered with sync. technology.

How long can a sync. video be?

The maximum length of a sync. video depends on the plan: 1 minute on Hobbyist, 5 on Creator, 10 on Growth and 30 on Scale.

Who makes sync.?

sync. is made by Synchronicity Labs Inc., as stated in the footer of its website.

Who it's for

  • Film and video studios
  • Localisation teams
  • Developers
  • Content creators
  • Post-production editors

Tagslipsyncvisual dubbingAPIvoice cloningPremiere plugin

Used in these workflows

Each guide lists the stages of one job and the tools that help at each stage. All guides

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