HeyGen vs Synthesia
HeyGen generates videos of AI avatars speaking a script you provide, using either a library of stock avatars or a custom avatar trained from a short recording of yourself. A key strength is automated translation and dubbing: a single video can be re-rendered in dozens of languages with lip movements adjusted to match the new audio, which is popular for training videos, product explainers, and localized marketing. The free tier allows a small number of short videos per month, enough to evaluate quality before committing; custom avatar creation and longer/more frequent videos require a paid plan starting around $29/mo. Avatar movements and lip-sync are good but can still look slightly artificial in close-up, especially with longer scripts or unusual phrasing.
Synthesia is built around enterprise video production: a library of 230+ professional-looking stock avatars, support for over 140 languages and accents, and templates designed for corporate training, onboarding, and internal communications. There's no permanent free tier, but a free trial lets you generate a short video to evaluate quality before subscribing; paid plans start around $29/mo for individuals, with enterprise pricing for teams that need custom avatars (created via a studio recording session), brand kits, and collaboration features. The avatar quality and language coverage are strong, but per-minute video limits on lower tiers mean longer training modules can require a higher-tier plan.
| HeyGen | Synthesia | |
|---|---|---|
| Category | Video Generation | Video Generation |
| Price | Free / from $29mo | From $29mo |
- + Realistic AI avatars from stock or custom
- + Automatic multi-language dubbing with lip-sync
- + Fast turnaround for talking-head videos
- + Useful free tier for testing
- – Avatar movement can look slightly robotic up close
- – Custom avatar creation costs extra
- – Free tier limited to short videos
- + Large library of professional stock avatars
- + 140+ languages and accents supported
- + Strong for corporate training content
- + Templates built for L&D workflows
- – No permanent free tier
- – Custom avatars require a studio recording session
- – Per-minute costs add up for long videos