Verdict
What is Synthesia?
Synthesia turns a written script into a video presented by an AI avatar, in a choice of languages.
What it does well
Internal training, compliance and onboarding video that changes often. When the policy changes you edit a line of script rather than book a studio.
Who should use it
Organisations with a training library to maintain, and teams producing the same explainer in several languages.
Who should not use it
Brand storytelling and customer-facing marketing video, where the synthetic delivery works against you.
Related reading
How we tested
Same source documents
Same job, every tool
One prompt per job
No re-rolls
Human review
Two editors, blind
Scored against the rubric
Published Sep 2026
Where it fits
Good for
- Organisations maintaining a training library
- Teams producing the same explainer in several languages
Not for
- Brand storytelling and customer-facing marketing video
Pros
- Turns a script edit into an updated video without a reshoot
- Produces the same explainer in multiple languages
Cons
- Synthetic delivery works against customer-facing brand storytelling
- Not a fit for material that needs a real presenter