About sync.
sync. (Sync Labs) builds lip-sync models that re-time a speaker's mouth to new audio in existing footage, available through a web studio and a developer API with SDKs. Its sync-3 model outputs native 4K and handles obstructions and extreme angles. It suits dubbing studios, post-production teams and developers adding lip-sync to products.
Specs
| Pricing | Free plan · from $5/mo |
|---|---|
| Free tier | Free trial: 3 generations/month, max 20s each |
| Max clip length | 1 min (Hobbyist) to 30 min (Scale) |
| Max resolution | 4K (sync-3) |
| Watermark on free plan | |
| Commercial use | |
| Developer API | Yes |
| Open source | No |
Last verified 2026-10-23. A dash means we couldn't confirm it from an official source — we leave it blank rather than guess.
Pros
- Native 4K output with the sync-3 model
- API and SDKs available from the $5 Hobbyist plan
- Pay-per-second usage with discounts up to 20% on higher tiers
Cons
- Subscriptions add per-second usage fees (about $0.04-0.133/sec)
- Watermark removal starts at the $19 Creator plan
- Hobbyist clips capped at 1 minute
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