Synthesia

Synthesia is an AI video generation platform built around digital human avatars, primarily used for corporate training, internal communications, marketing, and e-learning. It allows users to create professional-looking video content without cameras, studios, or recording sessions.

Synthesia 3.0 introduces the Express-2 engine, built on a diffusion transformer architecture. The most visible change is full-body avatars: previous versions produced talking-head videos where only the face and upper torso were animated. Express-2 generates complete body animations with natural hand gestures, posture shifts, and physically coherent lip sync — bringing the output significantly closer to recorded human video.

Action-based avatars are a new capability in 3.0: instead of simply speaking to the camera, avatars can perform specific prompted actions — gesturing toward a screen, turning to face a graphic, or pointing at an element on a slide. This makes Synthesia videos more dynamic and engaging for instructional content.

Personal Avatar creation has been simplified to require only a single photograph. The system generates a fully animated avatar from the photo within minutes, enabling anyone to create a personalized presenter without a video recording session. This removes a significant barrier that previously required either a recorded video or a trip to a Synthesia partner studio.

Copilot, a writing and production assistant, is planned for 2026 release. It will assist with script writing, connect to a company knowledge base for accurate content, and suggest visual elements and transitions to accompany the spoken content.

Synthesia supports 160+ languages with synchronized lip sync across all of them. It is a paid-only product with pricing based on video minutes per month and the number of team seats. Best for L&D teams, HR departments, and marketers who produce high volumes of explainer or training video content.