Synthesia generates professional-looking talking-head videos from a text script alone, using a library of over 150 diverse AI avatars and support for more than 120 languages, without requiring any camera, microphone, or on-camera talent. It's widely used for corporate training videos, product explainers, and localized marketing content, where the same script can be quickly turned into videos in dozens of languages for a global audience. Beyond its stock avatar library, Synthesia supports creating a custom avatar modeled on a real person (with their consent), useful for companies that want consistent, on-brand presenters across many videos. It also includes screen recording tools for combining a talking avatar with software walkthroughs, a common need in training content.