Sync is an AI lip-sync and visual dubbing platform from Sync Labs. The product is built around changing a speaker's mouth movements to match new audio, translated speech, generated voice, or text-to-speech, with both a web Studio and a developer API for production workflows.
Sync Review: Focused Lip-Sync Model for Production Dialogue
Sync is unusually focused. The product leads with sync-3 and emphasizes production constraints that matter in real footage: objects blocking the face, 4K ProRes, multiple faces, multiple camera angles, low light, fast camera moves, and rapid dialogue.
That is a stronger promise than most lip-sync tools. Sync is not just selling avatar dubbing; it is pitching lip-sync for messy shots in films, podcasts, games, creator videos, and localized media. I also like that the ecosystem includes Studio tools, API integration, a Premiere plugin, a ComfyUI node, and proprietary watermark verification.
Studio and Dubbing Workflow
This matters for filmmakers because localization is usually a chain of separate tools: translation, voice casting or cloning, timing, audio cleanup, and mouth replacement. Sync is trying to collapse that into a single visual dubbing workflow.
sync-3 Model
sync-3 is Sync's most important model. It is available across API, Studio, and Adobe Premiere Plugin workflows, with video or image input, 95+ languages, 4K native output, and one free sync-3 generation per month up to 15 seconds.
API and Developer Surface
Sync is very developer-friendly. The developer surface includes generation, assets, models, cost estimates, batch jobs, health checks, TTS, voices, projects, webhooks, Python SDK, TypeScript SDK, OpenAPI spec, and rate limits.
For technical teams, the model lineup includes sync-3, lipsync-2, lipsync-2-pro, lipsync-1.9.0-beta, and react-1, with rate limits and concurrency depending on plan.
Sync Pricing: Trial Limits, Lip-Sync Seconds, and API Usage
Sync uses subscription plus usage pricing:
- Free trial: 3 lip-sync generations per month, 10 TTS generations per month, all lip-sync models, 20-second max generation, 15 seconds for sync-3, no credit card.
- Hobbyist: $5/month plus $0.05/sec, up to 1-minute videos, 1 concurrent job, 3 cloned voices, API access, SDKs, Lipsync Studio, and community support.
- Creator: $19/month plus $0.05/sec, up to 5-minute videos, 3 concurrent jobs, 5 voices, own TTS API key, Active Speaker Detection, and no watermark.
- Growth: $49/month plus $0.0475/sec, up to 10-minute videos, 6 concurrent jobs, 15 voices, 5% usage discount, and 3 team seats.
- Scale: $249/month plus $0.04/sec, up to 30-minute videos, 15 concurrent jobs, 50 voices, 20% usage discount, 5 seats, delegated support, and Batch API.
The model table priced sync-3 around $0.107-$0.133 per second at 25 fps depending on tier. Older models are cheaper: lipsync-2 was $0.04-$0.05/sec, and lipsync-1.9.0 was $0.02-$0.025/sec.
What I Like About Sync
Sync has a clear wedge: make lip-sync and visual dubbing work on real footage, not only clean avatar demos. The product language around occlusions, low light, multiple faces, fast camera movement, and 4K ProRes suggests the team is listening to production pain rather than only optimizing landing-page demos.
The API surface is also unusually complete. Assets, projects, batches, webhooks, SDKs, OpenAPI, TTS, voice cloning, Premiere, ComfyUI, and MCP all point toward repeatable workflows. For a studio, agency, or developer building localization pipelines, that matters.
What Could Be Better in Sync
The pricing model is also harder to understand than a simple monthly plan. Users have to think about subscription tier, per-second usage, model choice, FPS, duration, concurrency, and watermark removal. That is fair for an API product, but less friendly for casual filmmakers.
Sync Alternative: Why Melies Can Be a Better Fit
Sync is stronger when the job is specifically lip-sync, visual dubbing, API integration, and localized video workflows. If you already have edited footage and need to replace speech or translate a speaker, Sync is the specialist.
is better when lip-sync is only one piece of an AI film workflow. Melies helps with story, scenes, AI actors, prompts, storyboards, voices, sound effects, music, posters, and video generation in one project context. If you are looking for a Sync alternative for AI filmmaking, Melies is broader and easier to use as the central production workspace. If you are building a lip-sync API pipeline, Sync is more specialized.Sync FAQ: Pricing, Features, and Alternatives
Does Sync have a free plan?
Yes. Sync has a free trial with 3 lip-sync generations per month, 10 text-to-speech generations per month, access to all lip-sync models, a 20-second max generation limit, and a 15-second limit for sync-3.
How much does Sync cost?
Sync combines a monthly subscription with per-second usage. Paid plans start at $5/month plus usage, while higher tiers unlock longer videos, more concurrency, team seats, discounts, and Batch API.
Does Sync support API access?
Yes. Sync supports a REST API, Python SDK, TypeScript SDK, OpenAPI spec, webhooks, batch processing, assets, projects, models, TTS, voice cloning, and generation endpoints.
What is the best Sync alternative?
Melies is a strong Sync alternative if you need lip-sync and dubbing inside a broader AI filmmaking workflow. Sync is better for specialist lip-sync, visual dubbing, API, and localization pipelines; Melies is better for story-to-video production with audio, voices, prompts, storyboards, and video generation together.