Synthesia vs HeyGen at a glance
| Feature | Synthesia | HeyGen |
|---|---|---|
| Best for | Corporate training & L&D video | Creators & voice/avatar cloning |
| Starting price | $18/mo | ★ Free / $24/mo |
| Free plan | No, demo only | ★ Yes, ongoing free tier |
| Avatars & voices | 230+ stock avatars, polished delivery | Large library plus easy custom avatars |
| Voice cloning | Available on higher tiers | ★ Fast, flexible voice cloning |
| Output quality | ★ Very consistent, business-ready | Excellent, slightly more variable |
| Languages | 140+ languages | ★ 175+ languages |
| Ease of use | ★ Template-driven, beginner-friendly | Flexible, slightly more options to learn |
Winner by category
Consistent, broadcast-safe avatars built for corporate use.
An ongoing free tier lets you test real output at zero cost.
Faster, more flexible cloning of your own voice.
Built around L&D workflows, scenes, and shareable courses.
Reasons to choose Synthesia
Synthesia’s strength is consistency for business video. It was built from the start for corporate training, onboarding, and internal comms, and it shows. The avatars deliver scripts in a steady, professional register that rarely surprises you, exactly what you want when a video is going in front of an entire workforce or a compliance course.
The template-driven editor is genuinely beginner-friendly. You pick an avatar, paste a script, choose a scene layout, and you have a watchable video in minutes without touching a timeline. For L&D teams who aren’t video editors, that low floor is a real advantage over more open-ended tools.
It also scales cleanly. Synthesia’s 230+ stock avatars, scene system, and shareable course features are aimed at organizations producing many videos in a repeatable way. If your goal is to turn documents and slide decks into standardized training at volume, in 140+ languages, Synthesia is the tool designed for that exact job.
Reasons to choose HeyGen
HeyGen’s biggest draw is that you can start for free. The ongoing free tier lets you generate real output before paying anything, which is a meaningful advantage over Synthesia’s demo-only approach. For creators and small teams testing whether AI avatars fit their workflow at all, that matters.
Beyond price, HeyGen leans into flexibility. Voice cloning is fast and easy, custom avatars are straightforward to set up, and the library is large. Creators who want an avatar that speaks in their own voice, or who want to experiment with different looks and styles, will find HeyGen accommodates that more readily.
Language coverage is the other edge: HeyGen advertises 175+ languages, slightly ahead of Synthesia. Output quality is excellent and only marginally less uniform than Synthesia’s. For social content, marketing clips, and personalized video where flexibility beats strict standardization, HeyGen is the more natural fit.
Pricing compared
HeyGen starts at free, with a limited monthly allowance, then moves to a paid plan around $24/month. The free tier is the headline, you can produce and evaluate real videos without a card.
Synthesia starts at $18/month with no permanent free tier, only a demo. That entry price is lower than HeyGen’s paid plan, so for committed business users Synthesia can actually be cheaper per month, you just can’t trial it for free in the same way.
So HeyGen wins on barrier to entry thanks to its free plan, while Synthesia’s paid entry point is the lower of the two. The value question is whether you need to test for free first, or you’re ready to commit to a standardized business workflow.
The verdict
Choose Synthesia if you produce corporate training, onboarding, or internal comms and want consistent, business-ready avatars from a template-driven editor built for non-editors. Choose HeyGen if you want to start free, clone your own voice quickly, and keep more flexibility over avatars and style, the better pick for creators and marketers. Training teams should lean Synthesia; independent creators will get more from HeyGen.
See our Synthesia review and our HeyGen review for the deeper look, and our roundup of the best AI video generators for the wider field.
Pricing note: AI video pricing and credits change often, verify current plans on each tool’s site before buying.
Frequently asked questions
Is Synthesia better than HeyGen?
For corporate training and consistent, business-ready avatars, Synthesia is the safer bet. For creators who want a free plan, quick voice cloning, and more flexible avatars, HeyGen is better. The right choice depends on whether you prioritize polish or flexibility.
Which is cheaper, Synthesia or HeyGen?
HeyGen has the lower barrier because it offers an ongoing free plan, while Synthesia starts at $18/month with no permanent free tier. On paid plans the two are closer, with HeyGen's entry plan around $24/month.
Does HeyGen support voice cloning?
Yes. HeyGen offers fast, flexible voice cloning so your avatars can speak in your own voice. Synthesia also supports voice cloning, but it is positioned on higher tiers.
Which has more languages?
HeyGen advertises slightly broader language coverage at 175+, while Synthesia supports 140+. Both cover the major business languages comfortably.