HeyGen vs Sync.so
A side-by-side look at HeyGen and Sync.so for filmmakers: what each one can do, what it costs, and where they actually differ.
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AI avatars, lip sync and dubbing for talking-head video in 175+ languages
- Price
- Free (3 videos/mo, 1-min cap) · Creator $29/mo · Pro from $49/mo · Business $149/mo + $20/seat
- Learning
- Easy
- Best for
- Presenter explainers when you cannot put a person on camera
-
Lip sync, dubbing and image-to-talking-video for footage you already shot
- Price
- Free (3 gens/month, 20s max); Hobbyist $5/mo; Creator $19/mo; per-second usage on top (sync-3 $0.107 to $0.133/sec by plan)
- Learning
- Easy
- Best for
- Redubbing a finished spot or doc for several language markets
The short version
Where they differ
- Only HeyGen offers AI agent.
- Only HeyGen offers text to image.
- Only HeyGen offers text to video.
- Only HeyGen offers native audio in video.
- Only HeyGen offers music & SFX.
All 2 offer: image to video, lip-sync, voice / TTS, public API, MCP server, free tier.
Feature by feature
HeyGen vs Sync.so: capabilities
| HeyGen | Sync.so | |
|---|---|---|
| Price | Free (3 videos/mo, 1-min cap) · Creator $29/mo · Pro from $49/mo · Business $149/mo + $20/seat | Free (3 gens/month, 20s max); Hobbyist $5/mo; Creator $19/mo; per-second usage on top (sync-3 $0.107 to $0.133/sec by plan) |
| Infinite canvas | Partial | No |
| AI agent | Yes | No |
| Chat assistant | Partial | Partial |
| Team collaboration | Yes | Partial |
| Text to image | Yes | No |
| Image editing | Partial | No |
| Text to video | Yes | No |
| Image to video | Yes | Yes |
| Video to video | Partial | Yes |
| Native audio in video | Yes | No |
| Lip-sync | Yes | Yes |
| Voice / TTS | Yes | Yes |
| Music & SFX | Yes | No |
| Character consistency | Yes | Partial |
| Camera control | Partial | No |
| Custom training | Partial | No |
| Third-party models | Yes | Partial |
| Public API | Yes | Yes |
| MCP server | Yes | Yes |
| Mobile app | Yes | Not confirmed |
| Desktop / local | Partial | No |
| Open source | Partial | No |
| Free tier | Yes | Yes |
| Commercial use | Partial | Not confirmed |
Each column comes from that tool's own researched page. "Not confirmed" means the vendor doesn't say.
The verdict
Which one should you pick?
HeyGen
Pick it for
- Presenter explainers when you cannot put a person on camera
- Localizing one finished talking-head video into many languages with dubbing
- Course and internal training videos built from a script
Stands out
- Avatar V builds a full upper-body digital twin from one 15-second recording, and the same twin works in Video Agent, Avatar Shots and the API.
- Long single-pass talking video: a 30-minute avatar clip in one generation on Avatar III, IV and V, where many rivals cap clips far shorter.
Watch out
- Free plan is capped at 3 videos a month and 1 minute each
- Credit cost varies by model and length, so monthly output is hard to predict
Sync.so
Pick it for
- Redubbing a finished spot or doc for several language markets
- Fixing a flubbed line or matching new VO to an existing take
- Lip syncing an AI-generated or photo-based character to a recorded performance
Stands out
- Lipsync is the whole product: it works on footage you already shot, so you don't regenerate the performance or the shot.
- sync-3 is stated to output up to 4K at 60fps, and the model handles multiple speakers by identifying who is talking before syncing the face.
Watch out
- Lipsync only: no generation, no shot creation, no soundtrack or music
- Free tier output is watermarked and capped at 20 seconds
Each column comes from that tool's own researched page, checked against vendor pricing and changelog pages (oldest check: ). Sources are listed on each tool's page.