HeyGen: avatar video for training, sales and support
A script becomes a video with a talking avatar, in over a hundred languages. Where that holds up, where it shows, and what it requires legally.
This article is an overview based on vendor information and publicly available reporting, not a scored test of our own. Prices and features change particularly fast in this field; the vendor's own terms always take precedence. The tools we have used ourselves for weeks are scored in the AI video generators & voice AI category.
The principle: script in, speaking person out
HeyGen turns written text into a video in which a digital human speaks it. You pick a ready-made avatar or have one built from video footage, choose language and voice, and a few minutes later you have a finished file.
For its current avatar generation the vendor claims very precise lip sync along with facial expression and gesture, and states support for more than 175 languages. Among avatar tools this is the direct competitor to Synthesia, which we have tested and scored.
The practical advantage is the same as there: a video that can be regenerated whenever a process changes costs almost no production time from the second version onwards.
What companies use it for
Three use cases keep coming up: mandatory training that has to be refreshed annually; product explanations needed in many languages; and personalised sales video in which the recipient's name and company are inserted.
That third case cuts both ways. It measurably works, but it turns uncomfortable the moment the recipient realises the personal address was machine-generated. If you use it, be open about it.
For internal communication the finding reverses: there the artificial impression barely matters, because nobody expects a cinematic experience, only clear information.
Pricing, limits and the legal frame
The vendor states a free tier with a few videos per month, with paid plans starting at around 24 US dollars a month including 1080p export and voice cloning. Prices and quotas in this field change often.
The limit is the same as with all avatars: over two or three minutes it becomes clear that nobody is really speaking. For narrative and emotion it stays unsuitable.
Legally the point is unambiguous: a cloned avatar depicts a real person, and so does a cloned voice. Both require documented consent, and synthetic content must be labelled. The checkpoints are in our guide to the GDPR and the AI Act.
Where it sits
HeyGen and Synthesia solve the same problem and differ mainly in emphasis and ecosystem: HeyGen leans towards sales, personalisation and language coverage, Synthesia towards corporate training with roles and approvals.
If you only want to voice a video rather than show a speaking human, ElevenLabs plus ordinary editing software is cheaper.
In short: strong for multilingual training and sales video, weak for anything narrative. Cloned avatars and voices need documented consent.
Tools discussed in this article
Each tool has a full review with scores and pricing.
We test AI tools on real work, with accounts we pay for ourselves, and write down what comes out of it, even when that is unspectacular. [Setup note: replace with the real author.]
