Sync Labs

Free plan AndroidAPIiPhoneMacWebWindows

What Sync Labs is

Sync Labs provides an AI lip-sync API that generates mouth movements matched to video and audio inputs. Its named uses include dubbing, localization, personalized video messaging, e-learning, marketing, entertainment, media, and gaming. Listed models include lipsync-1.9, lipsync-2, lipsync-2-pro, react-1, and sync-3. The introduction lists 512×512 face resolution for lipsync-2 and lipsync-2-pro, and native 4K for sync-3. The models process audio waveforms rather than text and support spoken languages including Mandarin and Thai. Developers can use a REST API and official Python and TypeScript SDKs. Documented integrations include Adobe Premiere, DaVinci Resolve, ChatGPT, an MCP server, ComfyUI, and ElevenLabs. Inputs include MP4 video and WAV or MP3 audio, supplied by public URL, direct API upload, or media-library asset ID. The free plan includes three generations monthly, each up to 20 seconds, and costs nothing. Hobbyist costs $5 a month plus $0.05/sec.

Who it suits

Sync Labs suits developers and creators working on dubbing, localization, or other video and audio projects. API access and SDKs support developer workflows.

What it does well

REST API and official Python and TypeScript SDKs
Supports MP4 video and WAV or MP3 audio inputs
Sync-3 lists native 4K output
Free plan includes three monthly generations
Documented integrations include Premiere and DaVinci Resolve

What to know first

Free plan limits generations to three per month
Free generations are limited to 20 seconds each
Hobbyist costs $5 a month plus $0.05/sec

Limits

The free plan allows three generations per month, each up to 20 seconds, plus 10 text-to-speech generations and one Sync-3 generation per month with a 15-second limit. Hobbyist costs $5 a month plus $0.05 per second and limits videos to one minute; higher paid tiers allow longer videos and list different per-second rates.

Plans

Plan	Billed and limits	Price
Free	3 lip-sync generations/month · 20 seconds each (15 seconds for sync-3) · 10 combined text-to-speech/dubbing generations · no credit card	Free
Creator	$19/month + $0.05/sec · 5-minute videos · 3 concurrent jobs · 5 voice clones · own TTS API key · active speaker detection · no watermark	$19 a month
Scale	$249/month + $0.04/sec · 30-minute videos · 15 concurrent jobs · 50 voice clones · 20% usage discount · 5 team seats · delegated support · Batch API	$249 a month
Growth	$49/month + $0.0475/sec · 10-minute videos · 6 concurrent jobs · 15 voice clones · 5% usage discount · 3 team seats · extra seats $25/month	$49 a month
Hobbyist	$5/month + $0.05/sec · 1-minute videos · 1 concurrent job · 3 voice clones · API and SDKs · watermark	$5 a month
Enterprise	Talk to Sales · Custom terms and limits	On request

As sync.so lists them, read 21 Oct 2026. The maker's own page has the final word.

Getting started

Open https://sync.so/
Choose the free plan or a paid plan
Use the web platform or connect through the REST API
For API development, use the official Python or TypeScript SDK
Provide MP4 video and WAV or MP3 audio by public URL, direct API upload, or media-library asset ID

Verdict

Sync Labs offers API-based lip synchronization with several input routes, models, and integrations. The free plan is limited to three short generations monthly, while the listed Hobbyist plan adds a per-second charge.

Questions

Is there a free plan?

Yes. It includes three generations per month of up to 20 seconds each, 10 text-to-speech generations, and one Sync-3 generation per month with a 15-second limit. No credit card is required.

How much do paid plans cost?

Hobbyist is $5 a month plus $0.05 per second. Creator is $19 a month plus $0.05 per second, Growth is $49 a month plus $0.0475 per second, and Scale is $249 a month plus $0.04 per second.

Which platforms does Sync Labs support?

The listed platforms are API and web.

What media can I provide?

The listed inputs are MP4 video and WAV or MP3 audio. They can be supplied by public URL, direct API upload, or media-library asset ID.

Which developer tools are available?

Sync Labs offers a REST API and official Python and TypeScript SDKs.

Who makes Sync Labs?

The site identifies the maker as Synchronicity Labs, Inc., with an address in San Francisco, California.

Facts from Sync Labs's own pages

API limitation: The TypeScript SDK is documented as server-side only because browser use would expose the API key. · sync.so, 21 Oct 2026
Batch limit: The introduction says batch processing supports up to 500 generations per batch on Scale+ plans. · sync.so, 30 Sept 2026
Batch processing: The API supports batches of up to 500 generations on Scale-plus plans. · sync.so, 21 Oct 2026
Browser support: Studio is officially tested on current Chrome, Firefox, Safari and Edge releases on Windows, macOS, Android and iOS/iPadOS. · sync.so, 21 Oct 2026
Changelog update: On September 30, 2026 Sync added generation time estimates, background Studio Lite processing and API re-downloads without regenerating. · sync.so, 21 Oct 2026
Company: The site identifies the maker as Synchronicity Labs, Inc. and lists an address in San Francisco, California. · sync.so, 30 Sept 2026
Company facts: LinkedIn lists Sync Labs as privately held, founded in 2023, headquartered in San Francisco and sized at 11–50 employees. · linkedin.com, 21 Oct 2026
Company founders: Crunchbase lists Pavan Reddy, Prady Modukuru, Prajwal K R and Rudrabha Mukhopadhyay as founders. · crunchbase.com, 21 Oct 2026
Company legal name: Crunchbase identifies the legal entity as synchronicity labs inc. and lists it as active and for-profit. · crunchbase.com, 21 Oct 2026
Developer tools: Sync Labs offers a REST API and official Python and TypeScript SDKs. · sync.so, 30 Sept 2026
Dialogue editing: Sync describes dialogue editing that rewrites spoken lines after filming and re-syncs the speaker without a reshoot. · sync.so, 21 Oct 2026
Funding profile: Dealroom reports a $24–36 million enterprise-value estimate and identifies the company as a Y Combinator Winter 2024 startup. · app.dealroom.co, 21 Oct 2026
Hosted service: The developer documentation directs users to Sync's hosted API and does not describe self-hosting or on-premises deployment. · sync.so, 21 Oct 2026
Independent profile: Dealroom describes Sync Labs as a real-time lip-sync API company launched in 2023 with a San Francisco headquarters and 11–50 employees. · app.dealroom.co, 21 Oct 2026
Integrations: Listed integrations include Adobe Premiere, DaVinci Resolve, ChatGPT, an MCP server, ComfyUI and ElevenLabs. · sync.so, 21 Oct 2026
Languages: The docs say the models operate on audio waveforms rather than text and support spoken languages including tonal languages such as Mandarin and Thai. · sync.so, 30 Sept 2026
License: Sync Labs is presented as a hosted commercial service; its product documentation does not identify an open-source license for the service. · sync.so, 21 Oct 2026
Limit: Clutch reviewer criticism: One Clutch review summary identifies speed of execution and turnaround time as an area for improvement. · clutch.co, 21 Oct 2026
Media input: The docs list MP4 video and WAV or MP3 audio inputs, supplied by public URL, direct API upload, or media-library asset ID. · sync.so, 30 Sept 2026
Models: The documentation lists lipsync-1.9, lipsync-2, lipsync-2-pro, react-1 and sync-3. · sync.so, 21 Oct 2026
OpenAPI: Sync publishes an OpenAPI 3.1 specification at sync.so/openapi.json. · sync.so, 21 Oct 2026
Operational limitation: Sync's troubleshooting guide says generations can remain pending during infrastructure issues and advises contacting support when they exceed ten minutes. · sync.so, 21 Oct 2026
Output resolution: The introduction lists 512×512 face resolution for lipsync-2 and lipsync-2-pro and native 4K for sync-3. · sync.so, 30 Sept 2026
Praise: Clutch reviewers: Clutch's review summary repeatedly mentions high-quality work, timely delivery, collaboration and willingness to exceed expectations. · clutch.co, 21 Oct 2026

Where Sync Labs stands on Freedom251

AI Video Lip Sync Tools#9 of 28