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No. 8 of 27 ·AI Video Lip Sync Tools

Sync Labs

Web · API · paid plans from $5/mo

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Freedom report

Two barsScore 6.4

  • Free tierA free tier is on its own pricing page
  • Open codeNo open-source code on record
  • Runs widely1 of 6 device platforms
  • DocumentedPlans, terms and facts published

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 0.00 USD per free. Hobbyist costs 5.00 USD per month plus $0.05/sec.

Who it is for

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

What is good

  • 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 5.00 USD per month plus $0.05/sec

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.

Sync Labs plans and pricing

All plans
Free Free 3 free generations/month (max 20 seconds each) · 10 text-to-speech generations · max 1 Sync 3 generation/month (15-second limit) · no credit card required sync.so · 30 Sept 2026
Hobbyist $5/mo $5/month + $0.05/sec videos up to 1 min · 1 concurrent job · up to 3 voice clones · API access + SDKs · Lipsync Studio · Community Support sync.so · 30 Sept 2026
Creator $19/mo $19/month + $0.05/sec videos up to 5 min · 3 concurrent jobs · up to 5 voice clones · own text-to-speech API key · Active Speaker Detection · no watermark sync.so · 30 Sept 2026
Growth $49/mo $49/month + $0.0475/sec videos up to 10 min · 6 concurrent jobs · up to 15 voice clones · 5% usage discount · 3 team seats · additional seats $25/mo sync.so · 30 Sept 2026
Scale $249/mo $249/month + $0.04/sec videos up to 30 min · 15 concurrent jobs · up to 50 voice clones · 20% usage discount · 5 team seats · delegated support channel · Batch API sync.so · 30 Sept 2026

Compared on AI video lip sync tools

Free plan
Yes
Paid from
$5/mo
Supported languages
29 languages
Maximum video length
1 min/video
Voice cloning
Yes
API access
Yes
Output resolution
4k
Watermark-free output
Yes

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