Overview
Synthesia is a business video platform that turns scripts, documents, slides or links into videos presented by AI avatars with synthetic voiceovers. It targets L&D, HR, sales enablement and marketing teams, and also offers AI dubbing, interactive avatar sessions and a developer API.
Label: Vendor-described — Captured from the vendor's own materials. Not independently verified.
Best for
- L&D, HR and training teams turning documents into avatar-led videos
- Companies localizing training and internal comms into many languages
- Enterprises needing SCORM export, SSO and compliance controls
Key features
- Hundreds of stock AI avatars plus personal avatars from a photo
- AI Assistant turns prompts, docs, slides or links into draft videos
- 140+ languages with 1-click translation and AI dubbing
- Interactive roleplay sessions, quizzes and branching scenarios
- SCORM export, embeds and built-in viewing analytics
- API, MCP server and SSO/SCIM for enterprise
What it does
- AI avatar videos from text, documents or slides
- Personal avatars created from a photo
- Videos in 140+ languages
- AI dubbing and video translation with optional lip sync
- Interactive roleplay and survey avatar sessions
- Brand kits, approvals and analytics
Use cases
- Create training or explainer videos with AI avatars — Creates avatar videos from text, documents or slides, in 140+ languages, with personal avatars.
Drawbacks & cautions
- Free plan limited to about 10 minutes of video per month and 9 avatars
- Paid plans are credit-based, so video minutes are capped per tier
- API usage is deducted from plan usage; per-plan API availability not clearly stated
What users say
Across G2 and Capterra reviews, users say Synthesia is easy to use and produces realistic avatar videos that save significant production time. The most repeated drawbacks are avatar limitations and restrictive or costly plan limits.
What people like
- Easy for people with no video or design experience capterra.com, g2.com
- Realistic avatars and voiceovers with good output quality capterra.com, g2.com
- Big time savings versus traditional video production capterra.com
Common complaints
- Avatars have limited gestures, expressions, outfits and backgrounds g2.com, capterra.com
- Plan limits feel restrictive and minutes run out quickly; enterprise pricing unclear capterra.com
- No true preview of avatar delivery before generating, which uses up minutes capterra.com
Scores are shown as each site published them on the date checked. They come from those sites' reviewers, not from us, and they never affect our rankings. Ratings based on fewer than 10 reviews are left out. The summaries are our own words, gathered Oct 22, 2026; follow the links to read the reviews.
Alternatives
- Adobe Firefly — Create images, video, audio and design assets with Adobe and partner AI models
- Google Flow (Veo) — Google's AI filmmaking tool for generating and editing video clips with Veo and Gemini models
- HeyGen — Create AI avatar videos, translate videos and clone voices for marketing and training
- Kling AI — AI video and image generator from Kuaishou with multi-reference control
Evidence
| Fact | Label | Source | Observed |
|---|---|---|---|
| api | Vendor-described | docs.synthesia.io | Oct 17, 2026 |
| capabilities | Vendor-described | www.synthesia.io | Oct 17, 2026 |
| overview | Vendor-described | www.synthesia.io | Oct 17, 2026 |
| pricing | Vendor-described | www.synthesia.io | Oct 17, 2026 |
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