Synthesia
AI video platform that turns scripts into avatar-presented videos
Last reviewed 2026-06-18
Synthesia is an AI video generation platform that turns a script, document, or URL into a video presented by a realistic AI avatar. It offers a large library of stock avatars, custom personal avatars, and AI voices across 140+ languages, plus one-click translation of finished videos and interactive video elements. It is widely used for training, learning-and-development, internal comms, and product or marketing explainers. Synthesia is an on-request creator: a user provides the script or source content, picks avatars and voices, edits scenes in a collaborative editor, and renders. It does not act autonomously; its AI assistant builds a draft script and scene layout that the human reviews.
What it can do
Generate avatar videos from a script
AssistantTurns a script into a video presented by a stock or custom AI avatar with synced speech, choosing from a library of 350+ avatars.
sourceVoice and localize in 140+ languages
AssistantGenerates AI voiceover across 140+ languages and one-click translates a finished video into other languages.
sourceDraft scripts and scenes from a URL or document
AssistantA built-in AI video assistant converts a URL or document into a full draft script and scene layout for the user to review and edit.
sourceAdd interactive elements and collaborate
AssistantSupports clickable in-video elements and Figma-like commenting with brand-kit enforcement for team review.
source
Strengths
- +Large avatar library and 140+ language voices with one-click video translation
- +Strong fit for training, L&D, and internal comms at scale; dramatically cheaper than filmed video
- +Collaborative editor with brand controls and an API for programmatic generation
Limitations
- −Credit/minute caps on lower tiers limit how much video you can render
- −Avatar delivery, while improving, can still read as synthetic for high-polish brand work
- −An assistant, not an agent: a human supplies the content and renders
Overview
Synthesia turns a script, document, or URL into a video presented by a realistic AI avatar, with voices and translation across 140+ languages.
What it does
Users pick from 350+ stock avatars or custom personal avatars, generate AI voiceover, add interactive elements, and collaborate in a Figma-like editor with brand controls. A built-in assistant drafts a script and scene layout from a URL or document. Finished videos can be translated in one click.
Integrations & setup
Exports for LMS workflows (SCORM), imports from PowerPoint, and exposes a REST API for programmatic video generation.
Pricing
Freemium: a free Basic plan with limited minutes, Starter around $18/mo and Creator around $64/mo (billed annually), and custom Enterprise with higher or unlimited minutes.
Traction
Synthesia reportedly raised $200M in late 2025 at a roughly $4B valuation, with total funding exceeding $536M; revenue figures circulating publicly are third-party estimates.
Best for / not for
Best for teams producing training, L&D, and internal-comms video at scale and across languages. Less suited to high-polish brand films or anyone needing hands-off generation.
Alternatives
HeyGen is the closest avatar-video competitor; Captions and Descript cover adjacent video creation and editing.
What people are saying
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FAQ
What is Synthesia used for?+
Turning scripts into avatar-presented videos for training, internal comms, product explainers, and marketing, with voiceover and translation across 140+ languages.
Does Synthesia create videos autonomously?+
No. Its AI assistant can draft a script and scene layout from a URL or document, but a human reviews, edits, and renders the video.
Sources
- Synthesia (official site) · accessed 2026-06-18
- Synthesia pricing (official) · accessed 2026-06-18
- AI video startup Synthesia reportedly raises $200M at $4B valuation (SiliconANGLE) · accessed 2026-06-18
Last reviewed 2026-06-18