Head to head · Video · updated Oct 18, 2026
Synthesia vs HeyGen
Synthesia scores 19 to HeyGen's 16 on public evidence for video translation & dubbing, and they rank #2 and #3 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Synthesia
Enterprise AI video platform that turns scripts into presenter-led videos with stock or custom avatars in 140+ languages.
+ Mature enterprise features (SCORM export, brand kits, SOC 2, collaboration) for training content at scale.
− Avatars look corporate and the free/starter tiers allow only a few minutes of video per month.
HeyGen
AI avatar video platform with custom digital twins, interactive avatars and lip-synced video translation.
+ Video translation re-voices and lip-syncs you into 175+ languages with uncannily natural results.
− Pricing climbs steeply for longer videos and custom avatars still show a telltale stiffness.
Side by side
public evidence| Synthesia | HeyGen | |
|---|---|---|
| Evidence score / 100 | 19 | 16 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 2 | 1 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Free tier · from $18/mo | Free tier · from $29/mo |
| Platforms | web, api | web, api, ios |
| Maker | Synthesia | HeyGen |
Which one?
Pick Synthesia if
- you want the stronger public evidence (19 vs 16)
Best for corporate training and onboarding videos.
Pick HeyGen if
- you need it on ios
Best for avatar videos and translated talking-head content.