Elai.io 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 $23/month for Elai.io (lowest published rate; may need yearly billing).
- Maximum resolution: Elai.io 4K, Synthesia not stated.
- Elai.io states custom avatar / digital twin; Synthesia does not say so on the pages we checked.
- Synthesia states lip sync; Elai.io does not say so on the pages we checked.
- Elai.io states auto captions / subtitles; Synthesia does not say so on the pages we checked.
Side by side
| Fact | Elai.io | Synthesia |
|---|---|---|
| Type | AI avatar video | AI avatar video |
| Starts at | $29/mo ($23/mo yearly) | $19/mo |
| Billing | Subscription | Credits |
| Free plan | Free plan (1 video minute) | Free plan (10 minutes of video creation or dubbing a month) |
| Watermark | Not stated | Watermark on free |
| Max resolution | 4K | Not stated |
| Max clip / video length | Not stated | Not stated |
| Commercial use | Not stated | Not stated |
| API | Not stated | Yes |
| Text to video | Yes (vendor states it) | Yes (vendor states it) |
| AI avatars | Yes (vendor states it) | Yes (vendor states it) |
| Custom avatar / digital twin | Yes (vendor states it) | Not stated |
| Lip sync | Not stated | Yes (vendor states it) |
| Voice cloning | Yes (vendor states it) | Yes (vendor states it) |
| Translation / dubbing | Yes (vendor states it) | Yes (vendor states it) |
| Auto captions / subtitles | Yes (vendor states it) | Not stated |
| Templates | Yes (vendor states it) | Yes (vendor states it) |
| Checked | Oct 26, 2026 | Oct 26, 2026 |
| Website | Visit Elai.io | Visit Synthesia |
Summaries
Elai.io: AI avatar video generator with 80+ avatars and 75+ languages, priced by video minutes.
Synthesia: AI avatar video platform for training, internal comms and dubbing, with 125+ stock avatars, templates and credit-based plans.
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