Synthesia

London-based Synthesia generates realistic AI avatar videos from text in dozens of languages, letting companies produce polished video without cameras, actors or studios.

Its sweet spot is enterprise use - training, internal communications and marketing - where it replaces slow, expensive production cycles with a few minutes of editing. Tens of thousands of businesses use the platform, making it one of the defining names in generative video.

It has reached significant scale on annual recurring revenue while navigating the trust-and-safety questions that come with synthetic media.