Synthesia vs HeyGen
The two leading AI avatar video tools, chosen between on whether the video needs to look like you or just needs to work at scale.
The difference that matters
Synthesia is built around a library of stock and custom presenter avatars for training and explainer content in 140+ languages. HeyGen is built around cloning your own face and voice, then translating existing footage into other languages while keeping that same voice.
Side by side
| Synthesia | HeyGen | |
|---|---|---|
| Free tier | 1,200 credits/month (up to 10 minutes of video, 25 AI video assets), no credit card required | not stated |
| Entry paid plan | $29/mo | $29/mo |
| Bills in | credits | not stated |
Choose Synthesia if
You are producing a training library or onboarding series that needs to scale across languages and get updated by editing text, not reshooting.
Choose HeyGen if
The video needs to feel personal, like it is actually you talking, or you are translating footage you already shot and want your own voice to carry across languages.
Our verdict
Synthesia for corporate training and explainer libraries at scale. HeyGen when the face on screen has to be yours, especially for UGC-style ads and video translation.
What to watch out for
HeyGen's own pricing page describes a free tier in marketing language without a stated quota, so we could not confirm its limits and left the figure out rather than guess. Synthesia's 1,200 credits/month free tier is confirmed and stated.
Compare against the rest
Both of these sit in the full Video directory, which covers 11 tools.
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