Synthesia Raises $200 Million at $4 Billion Valuation to Expand AI Training Agents

London-based Synthesia has raised $200 million in a Series E funding round led by GV (Google Ventures), valuing the company at $4 billion, according to the Wall Street Journal.

The new capital will support the development of software that allows employees to interact with AI agents during corporate training. These agents can answer questions, simulate role-play scenarios, and deliver personalized explanations, replacing traditional static training materials.

Existing investors including NVentures, Accel, Kleiner Perkins, New Enterprise Associates, PSP Growth, and Air Street Capital participated in the round, alongside new entrants Hedosophia and Evantic. Founded in 2017, Synthesia specializes in text-to-video generation and offers both free and enterprise subscription plans for creating AI-generated training videos.

The company said the funding will help expand its platform’s capabilities to make employee learning more dynamic and responsive through the use of advanced AI video avatars.