Synthesia Raises $200M at $4B Valuation for AI Training Videos
Enterprise AI video is proving lucrative enough to double a company's valuation in twelve months.
From $2B to $4B in a Year
London-based Synthesia announced on January 26 that it has raised $200 million in Series E funding at a $4 billion valuation, nearly doubling the $2.1 billion valuation it reached just twelve months earlier. The round was led by Google Ventures, with participation from Nvidia's venture arm NVentures, Accel, Kleiner Perkins, and other existing investors.
Synthesia's AI platform allows companies to create training and internal communication videos using synthetic avatars and voices, eliminating the need for traditional video production. The company crossed $100 million in annual recurring revenue in April 2025 and counts more than 90 percent of Fortune 100 companies among its customers, including Bosch, Merck, and SAP.
From Passive Video to Interactive Agents
Synthesia plans to use the funding to move beyond passive training videos into conversational AI agents for workforce upskilling. The company envisions employees interacting with AI-powered avatars to ask questions, role-play scenarios, and receive personalized explanations, rather than simply watching pre-recorded material.
CEO Victor Riparbelli said the company is targeting the intersection of two trends: AI agents becoming more capable, and upskilling becoming a board-level priority. The shift reflects broader enterprise interest in tools that address skills gaps as job requirements evolve faster than traditional training programs can adapt.
Employee Liquidity Through Nasdaq
Alongside the primary funding round, Synthesia facilitated an employee secondary sale in partnership with Nasdaq, allowing long-tenured team members to sell shares at the $4 billion valuation while remaining invested in the company's future. The structured approach ensures all employee sales happen at the same valuation as the Series E, avoiding the pricing inconsistencies that often accompany informal secondary transactions.
The move is unusual for a UK-based startup but may become more common as European companies stay private longer. Synthesia now employs more than 500 people across offices in London, Amsterdam, Copenhagen, Munich, New York, and Zurich.