HeyGen vs Synthesia
What each vendor publishes about price, free plan, watermark, resolution, length and features, side by side. Checked Oct 26, 2026. We don't test tools; we compare what vendors publish, and every fact links to its source on the tool's profile.
The differences in short
- Synthesia has the lower published price: $19/month against $29/month for HeyGen (lowest published rate; may need yearly billing).
- Maximum resolution: HeyGen 4K, Synthesia not stated.
- HeyGen states image to video; Synthesia does not say so on the pages we checked.
- HeyGen states custom avatar / digital twin; Synthesia does not say so on the pages we checked.
- HeyGen states upscaling; Synthesia does not say so on the pages we checked.
Side by side
| Fact | HeyGen | Synthesia |
|---|---|---|
| Type | AI avatar video | AI avatar video |
| Starts at | $29/mo | $19/mo |
| Billing | Subscription | Credits |
| Free plan | Free plan (3 watermarked videos a month, up to 1 minute each) | Free plan (10 minutes of video creation or dubbing a month) |
| Watermark | Watermark on free | Watermark on free |
| Max resolution | 4K | Not stated |
| Max clip / video length | 60 min | Not stated |
| Commercial use | Not stated | Not stated |
| API | Yes | Yes |
| Text to video | Yes (vendor states it) | Yes (vendor states it) |
| Image to video | Yes (vendor states it) | Not stated |
| AI avatars | Yes (vendor states it) | Yes (vendor states it) |
| Custom avatar / digital twin | Yes (vendor states it) | Not stated |
| Lip sync | Yes (vendor states it) | Yes (vendor states it) |
| Voice cloning | Yes (vendor states it) | Yes (vendor states it) |
| Translation / dubbing | Yes (vendor states it) | Yes (vendor states it) |
| Templates | Yes (vendor states it) | Yes (vendor states it) |
| Upscaling | Yes (vendor states it) | Not stated |
| Checked | Oct 26, 2026 | Oct 26, 2026 |
| Website | Visit HeyGen | Visit Synthesia |
Summaries
HeyGen: AI avatar and video-translation platform with custom video avatars, Video Agent and 175+ languages.
Synthesia: AI avatar video platform for training, internal comms and dubbing, with 125+ stock avatars, templates and credit-based plans.
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