Synthesia is the gold standard for AI avatar video. The avatars are remarkably realistic, the voice library covers 140+ languages, and the platform is wrapped in the kind of compliance and workflow tooling that enterprise L&D teams require. For a corporate buyer producing localized training and explainer videos at scale, Synthesia is the obvious pick.
The trade-off for a student is steep. None of the study workflow exists — no flashcards, no spaced repetition, no graded exams, no notes editor, no AI Meeting Notes, no chat-with-your-material — and the pricing is built for organizations, not individual learners. A student paying for Synthesia is paying for avatar fidelity and multilingual TTS they likely don't need, then still needing other tools to actually learn the material.
Scholarly takes the opposite trade. The video lectures use a clean narrated format with auto chapters and a click-to-jump transcript instead of a photoreal avatar — and then it closes the entire study loop around them. The same upload becomes flashcards on a spaced-repetition schedule, a graded practice exam, a study podcast, a slide deck, and editable notes. You can also switch between AI models and run a deep research mode. For a student, that's a much better fit than an enterprise avatar studio.