Captions vs sync.
A spec-by-spec comparison of Captions and sync.: pricing, free tier, clip length, resolution, watermark, commercial use and API access.
Key differences
- sync. is cheaper to start: $5/month vs $24.99/month for Captions.
- Free tier: Captions — Basic editing tools only (trim, transitions, captions); no AI credits; sync. — Free trial: 3 generations/month, max 20s each.
- Captions is strongest at editing; sync. at lip sync.
| Captions | sync. | |
|---|---|---|
| Pricing | Free plan · from $24.99/mo | Free plan · from $5/mo |
| Free tier | Basic editing tools only (trim, transitions, captions); no AI credits | 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 | Yes |
| Open source | No | No |
Captions is a mobile and web video editor from Mirage (the company's new name) that auto-edits footage, adds styled captions, translates and lip-dubs videos, and creates AI avatars or digital twins. Generative features run on monthly credits. It is aimed at short-form creators and social marketers; Mirage also offers APIs for video generation and captioning.
- All-in-one: auto-edit, captions in 100+ languages, AI twins and lipdub
- Unused credits roll over (balance up to 3x monthly allowance)
- APIs available through parent company Mirage
- Free plan excludes generative AI features
- Listed prices reflect iOS plans; other platforms may differ
- Frontier tiers run $69.99-279.99/month
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.
- 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
- 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
Specs last verified 2026-10-23 (Captions) and 2026-10-23 (sync.). See each tool page for sources.