London-based AI video startup Synthesia has raised $200 million in a Series E round, bringing its valuation to approximately $4 billion and solidifying its position as one of Europe's most valuable AI companies.

The round was led by Google Ventures, with participation from existing investors, underscoring continued appetite for applied AI products with a clear commercial use.

Technology and Applications

Synthesia builds generative AI tools that let companies create videos using AI-generated avatars, eliminating the need for cameras, studios, or presenters. The technology has found a strong foothold in corporate training, internal communications, and product explainers, areas where speed, scale, and cost reduction are key factors.