The quick read
- Create a short version of the same lesson in each format.
- Use authorised voices and likenesses and make synthetic presentation clear where viewers could otherwise be misled.
Choose the job of the format
An avatar can provide a consistent on-screen presenter. A voiceover can keep attention on a demonstration, diagram or other visual evidence. The decision should start with what the audience needs to understand, not with the novelty of a generated face.
Compare comprehension
Create a short version of the same lesson in each format. Ask viewers to explain the key point and find a specific instruction. Check pronunciation, captions, pacing and whether the presenter obscures information. Include production and revision effort in the comparison.
Make authorship clear
Use authorised voices and likenesses and make synthetic presentation clear where viewers could otherwise be misled. Keep a human accountable for the script. Choose the format that helps people learn or act, with a text alternative for those who cannot use audio or video.
Sources & notes
An editorial decision framework, not a scored benchmark or hands-on test.
Sources reviewed for the September 2026 launch edition.