British artificial intelligence company Synthesia has raised $200 million in a Series E funding round, valuing the startup at $4 billion. This nearly doubles the $2.1 billion valuation it reached last year and shows that investors are still eager to back AI companies with clear business applications.
The round was led by Google Ventures and included new investors Hedosophia and Evantic, the venture fund started by former Sequoia Capital investor Matt Miller. Existing backers such as NVentures, Nvidia’s venture arm, Accel, Kleiner Perkins, New Enterprise Associates, PSP Growth, and Air Street Capital also participated.
Synthesia, founded in 2017 by AI researchers from Stanford and Cambridge, focuses on text-to-video AI software. Its platform allows companies to create training and internal communications videos using AI avatars, cutting down the need for traditional video production. The company operates on a freemium model as well as subscription plans and tailored enterprise packages.
Unlike many AI startups still experimenting, Synthesia has found strong traction in corporate learning and development. Its clients include Bosch, Merck, SAP, and Microsoft. The company reported passing $100 million in annual recurring revenue in April 2025 and expects to reach $200 million this year. Large contracts are also growing fast, with agreements over $100,000 quadrupling in the last 12 months.
The new funds will be used to develop interactive AI video tools. Synthesia is building AI agents that can answer questions, simulate role-playing scenarios, and provide personalized guidance during training sessions. CEO Victor Riparbelli said companies are under pressure to reskill employees, creating a timely opportunity for interactive training tools. He called the combination of enterprise demand and AI capability a rare market moment.
Alongside the funding, Synthesia is offering a secondary share sale for employees through Nasdaq. This allows staff to sell shares at the $4 billion valuation, giving them liquidity while keeping the company focused on long-term growth as a private business. CFO Daniel Kim noted that structured secondary sales help employees access cash without disrupting overall company strategy.
The funding comes amid wider debates about whether heavy AI investment is creating a bubble. While some investors are cautious, the Synthesia round highlights that capital still flows to companies with proven revenue and enterprise adoption. European AI startups, however, still lag behind US peers in valuations. US companies like OpenAI and Anthropic are raising funds at far higher valuations, showing a clear transatlantic gap in AI funding.
Overall, Synthesia’s success underlines investor confidence in AI companies that solve real business problems and have a clear path to revenue, rather than those focused solely on experimentation.