Sync Labs
Sync Labs provides an AI lip-sync API that generates matched mouth movements from video and audio.
What Sync Labs is
Sync Labs provides an AI lip-sync API that generates matched mouth movements from video and audio. It offers models including lipsync-1.9, lipsync-2, lipsync-2-pro, react-1 and sync-3. The listed output options include 512×512 face resolution for lipsync-2 and lipsync-2-pro, and native 4K for sync-3. Models work from audio waveforms rather than text and support spoken languages including Mandarin and Thai. Use cases named by the company range from dubbing and localization to e-learning, marketing, entertainment, media and gaming. Developers can use the 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, provided by public URL, direct API upload or media-library asset ID. The free plan includes three generations per month, each up to 20 seconds, and no credit card is required.
Good
- Free plan includes three monthly generations.
- REST API and Python and TypeScript SDKs.
- Supports MP4, WAV and MP3 inputs.
- Sync-3 lists native 4K output.
- Watermark verification can identify modified videos.
Watch out
- Free plan limits generations and duration.
- Paid tiers add per-second usage charges.
- Privacy policy allows use of content to develop AI models.
Who it suits
It suits developers and creators working on video dubbing, localization, or other lip-synced content. The API, SDKs, and listed editing and AI integrations may fit teams building these capabilities into workflows.
Verdict
Sync Labs combines API-based lip-sync generation with several models, audio formats, SDKs and documented integrations. Review the generation limits, usage charges and content privacy terms when deciding whether it fits your workflow.
Plans and prices
From Sync Labs's own pricing page, checked 21 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 3 lip-sync generations/month · 20 seconds each (15 seconds for sync-3) · 10 combined text-to-speech/dubbing generations · no credit card |
| Hobbyist | $5 a month | 1-minute videos · 1 concurrent job · 3 voice clones · API and SDKs · watermark · $5/month + $0.05/sec |
| Creator | $19 a month | 5-minute videos · 3 concurrent jobs · 5 voice clones · own TTS API key · active speaker detection · no watermark · $19/month + $0.05/sec |
| Growth | $49 a month | 10-minute videos · 6 concurrent jobs · 15 voice clones · 5% usage discount · 3 team seats · extra seats $25/month · $49/month + $0.0475/sec |
| Scale | $249 a month | 30-minute videos · 15 concurrent jobs · 50 voice clones · 20% usage discount · 5 team seats · delegated support · Batch API · $249/month + $0.04/sec |
| Enterprise | Priced on request | Custom terms and limits · Talk to Sales |
The facts
Each one read from Sync Labs's own pages, with the date it was checked.
What it does
- API limitation
- The TypeScript SDK is documented as server-side only because browser use would expose the API key.checked 21 Oct 2026
- Batch limit
- The introduction says batch processing supports up to 500 generations per batch on Scale+ plans.checked 30 Sep 2026
- Batch processing
- The API supports batches of up to 500 generations on Scale-plus plans.checked 21 Oct 2026
- Changelog update
- On September 30, 2026 Sync added generation time estimates, background Studio Lite processing and API re-downloads without regenerating.checked 21 Oct 2026
- Developer tools
- Sync Labs offers a REST API and official Python and TypeScript SDKs.checked 30 Sep 2026
- Dialogue editing
- Sync describes dialogue editing that rewrites spoken lines after filming and re-syncs the speaker without a reshoot.checked 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.checked 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.checked 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.checked 21 Oct 2026
- Integrations
- Listed integrations include Adobe Premiere, DaVinci Resolve, ChatGPT, an MCP server, ComfyUI and ElevenLabs.checked 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.checked 30 Sep 2026
- License
- Sync Labs is presented as a hosted commercial service; its product documentation does not identify an open-source license for the service.checked 21 Oct 2026
- Limit: Clutch reviewer criticism
- One Clutch review summary identifies speed of execution and turnaround time as an area for improvement.checked 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.checked 30 Sep 2026
- Models
- The documentation lists lipsync-1.9, lipsync-2, lipsync-2-pro, react-1 and sync-3.checked 21 Oct 2026
- OpenAPI
- Sync publishes an OpenAPI 3.1 specification at sync.so/openapi.json.checked 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.checked 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.checked 30 Sep 2026
- Praise: Clutch reviewers
- Clutch's review summary repeatedly mentions high-quality work, timely delivery, collaboration and willingness to exceed expectations.checked 21 Oct 2026
Where it runs
- Browser support
- Studio is officially tested on current Chrome, Firefox, Safari and Edge releases on Windows, macOS, Android and iOS/iPadOS.checked 21 Oct 2026
The company
- Company
- The site identifies the maker as Synchronicity Labs, Inc. and lists an address in San Francisco, California.checked 30 Sep 2026
- Company facts
- LinkedIn lists Sync Labs as privately held, founded in 2023, headquartered in San Francisco and sized at 11–50 employees.checked 21 Oct 2026
- Company founders
- Crunchbase lists Pavan Reddy, Prady Modukuru, Prajwal K R and Rudrabha Mukhopadhyay as founders.checked 21 Oct 2026
- Company legal name
- Crunchbase identifies the legal entity as synchronicity labs inc. and lists it as active and for-profit.checked 21 Oct 2026
The full review of Sync Labs
Sync Labs is an API- and web-based lip-sync service for creators and teams producing dubbed or localized video. It suits workflows that benefit from model choice, SDKs and integrations, but per-second charges make frequent generation costs worth tracking.
Overview
Sync Labs matches lip movements to supplied video and audio. It accepts MP4 video with WAV or MP3 audio, provided by public URL, direct API upload or media-library asset ID. Its models include lipsync-1.9, lipsync-2, lipsync-2-pro, react-1 and sync-3. The range gives teams options, but model choice matters: lipsync-2 and lipsync-2-pro list 512×512 face resolution, while sync-3 supports native 4K.
The models operate on audio waveforms rather than text and support 29 languages, including tonal languages such as Mandarin and Thai. Sync Labs also offers watermark verification to check whether a video was modified using its technology. Its privacy policy says uploaded or generated content may include photos, videos and text, and personal information may be used to develop, train and fine-tune AI models. That is a material consideration for teams working with sensitive media.
Key features
- API and SDKs: A REST API and official Python and TypeScript SDKs suit developers integrating generation into an existing workflow.
- Integrations: Documented connections include Adobe Premiere, DaVinci Resolve, ChatGPT, an MCP server, ComfyUI and ElevenLabs, broadening options for creative and developer workflows.
- Batch generation: Scale plans support up to 500 generations per batch, useful for larger queues rather than occasional one-off jobs.
- Voice cloning: Paid tiers set different clone limits, from three on Hobbyist to 50 on Scale.
Pricing
Sync Labs has a free plan and paid plans from $5/mo. Paid prices are monthly, and each paid tier also charges per second of generated video, so the subscription price is not the full usage cost.
| Plan | Price | What it includes |
|---|---|---|
| Free | free | Three free generations per month, each up to 20 seconds; 10 text-to-speech generations; and at most one Sync 3 generation per month, limited to 15 seconds. No credit card is required. The short caps make it best for limited evaluation, not sustained production. |
| Hobbyist | $5 a month | $5/month plus $0.05/sec; videos up to 1 minute, one concurrent job and up to three voice clones, plus API access, SDKs, Lipsync Studio and Community Support. A low entry price, but the concurrency and duration caps constrain throughput. |
| Creator | $19 a month | $19/month plus $0.05/sec; videos up to 5 minutes, three concurrent jobs, up to five voice clones, your own text-to-speech API key, Active Speaker Detection and no watermark. It is the more suitable step up for longer clips and parallel work. |
| Growth | $49 a month | $49/month plus $0.0475/sec; videos up to 10 minutes, six concurrent jobs, up to 15 voice clones, a 5% usage discount and three team seats. Additional seats cost $25/mo. The discount and capacity favor regular team use. |
| Scale | $249 a month | $249/month plus $0.04/sec; videos up to 30 minutes, 15 concurrent jobs, up to 50 voice clones, a 20% usage discount, five team seats, delegated support and Batch API. It is aimed at higher-volume operations; its higher fixed cost is difficult to justify for sporadic work. |
Platforms
Sync Labs is available on web and through an API. The developer-facing REST API and Python and TypeScript SDKs make it a stronger fit for integrated workflows than for people seeking only a standalone desktop application.
Who it's for
Video localization, e-learning, marketing, entertainment, media and gaming teams can use Sync Labs for matched lip-sync generation. The tiers suit a range from individual experimentation to team batch processing. It is less appealing for occasional long-form work because duration limits and per-second charges apply, and sensitive-content workflows should account for the stated use of personal information in model development.
Pros and cons
- Pro: Broad model and resolution choices, including native 4K on sync-3, support different output needs.
- Pro: REST API, two official SDKs and documented integrations suit workflows that need more than a standalone web tool.
- Pro: Higher tiers increase video duration, concurrency and batch capacity, with usage discounts for larger workloads.
- Con: Paid plans add per-second charges, making total spend depend on generated duration as well as the subscription.
- Con: The free allowance is tightly capped, including a 15-second Sync 3 limit, so it cannot establish sustained production capacity.
- Con: The privacy policy permits personal information to be used in developing, training and fine-tuning AI models, which may not suit sensitive media.
Alternatives
Compare options in AI Video Lip Sync Tools. LipDub is another freemium web and API option, with a free Seed tier offering one minute at 1080p with a watermark alongside AI dubbing, voice cloning and lip sync. CHAMELAION LipSync API offers a free 24,000-token Starter tier that covers two minutes of video translation and lip sync with a watermark, or a €5 a month Basic plan.
lipsyn.cc may suit a one-off short preview: it offers a five-second free preview without signup or a card, and a one-time Quick Take purchase. Lipsync.video is a web-only option with a $7.99 a month Starter plan, 250 monthly credits and up to 250 seconds of video per month, without auto-renewal. SadTalker is the alternative for readers seeking free, offline, open-source software across Linux, macOS and Windows.
Wav2Lip is another lip-sync option; VisualDub offers use-case-based pricing after discussing the specific use case. Lip Forcing is a free Linux and self-hosted alternative.
Verdict
Choose Sync Labs if you need API-driven lip-sync generation with multiple models, developer tools and a path to higher-volume batch work. Its clearest drawback is cost control: per-second billing sits on top of every paid subscription, while the free plan is too limited for ongoing use. Teams handling sensitive media should also consider its stated model-development use of personal information before adopting it.
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