Synthesia

Synthesia is the enterprise standard for AI avatar video. You type or paste a script, pick a presenter and language, and it generates a talking-head video with synchronized lip movement — no camera, microphone, actor, or studio required. Founded in London in 2017 by researchers including academics from UCL and Stanford, it is used by tens of thousands of companies, including names like Reuters, Zoom, and Heineken, largely for training, onboarding, and internal communications.

The core appeal is turning documents and slide decks into watchable video at scale, then updating them by editing text instead of reshooting. With 170+ stock avatars, optional custom avatars trained from a short video of a real person, and support for 140+ languages, a single English script can become localized videos for a global workforce in minutes.

Competitors include HeyGen, which is often seen as more consumer- and creator-friendly, and D-ID. Synthesia leans enterprise: brand kits, collaboration, SCORM export for learning management systems, and security and compliance features aimed at large organizations.

Key Features

• 170+ diverse stock AI avatars with accurate lip-sync
• Custom avatars trained from a short video of a real presenter
• 140+ languages and a wide range of voices and accents
• PowerPoint-style editor to build videos from scripts and slides
• SCORM export for LMS and training platforms
• Brand kits, templates, and team collaboration

Pricing

• Starter (around $18–29/month): A set number of video minutes per year and a limited avatar selection
• Creator (around $67/month): More minutes, custom avatar options, and additional features
• Enterprise: Custom pricing with unlimited/higher minutes, SSO, and advanced security

Minute allowances and exact prices shift with plan updates; check the site for current figures.

Best For

L&D and HR teams producing training and onboarding at scale, internal-communications teams, and marketing groups at mid-to-large companies that need frequently updated, multilingual video without a production crew.

Limitations

Synthesia is priced for organizations, not individuals, so it can feel expensive for small teams or one-off projects. Despite steady improvement, avatars still read as slightly artificial next to real filmed footage, and you get limited control over gestures and facial expression. Creators wanting a cheaper or more flexible avatar tool often compare it with HeyGen.