Synthesia has raised $200 million (£146 million) in fresh funding in a round led by Google Ventures, pushing the London-based company’s valuation to $4 billion and cementing its position as one of the UK’s most valuable artificial intelligence businesses.
The investment marks a sharp step up from Synthesia’s previous £146 million Series D round in January 2025, which valued the company at $2.1 billion, highlighting the speed at which the business has scaled amid the global AI boom.
The latest round also attracted backing from Evantic, founded by former Sequoia partner Matt Miller, and Hedosophia, alongside participation from existing investors including NVentures, Accel, Kleiner Perkins, New Enterprise Associates, PSP Growth, Air Street Capital and MMC Ventures.
As part of the transaction, Synthesia will also facilitate an employee secondary share sale in partnership with NASDAQ, priced at the new $4 billion valuation.
The company said the capital will be used to “build a category-defining company that will transform how employees learn”, with a focus on enterprise learning and development, internal knowledge sharing, product marketing and sales enablement, powered by increasingly autonomous AI agents.
Founded in London, Synthesia enables businesses to create studio-quality video content using AI-generated avatars, eliminating the need for cameras, actors or production studios. The platform is now used by more than 90 per cent of Fortune 100 companies to streamline corporate communications, training and marketing.
The business has seen rapid growth through 2025, with annual recurring revenue surpassing $100 million. Co-founder and chief executive Victor Riparbelli recently revealed that the company generated $2 million in ARR in a single day.
Synthesia became a unicorn in 2023 and has since accelerated its international expansion, targeting markets including Japan, Australia, Europe and North America. It now employs more than 500 people across offices in London, New York, Copenhagen, Amsterdam, Zurich and Munich, with a significant proportion of its revenue coming from the United States.
In July, the company opened a new 20,000-square-foot headquarters in London, attended by Sadiq Khan and business secretary Peter Kyle.
Riparbelli said the funding would allow Synthesia to scale its long-term vision. “Synthesia was founded on two core beliefs: that AI will bring the cost of content creation down to zero, and that AI video provides a more engaging way for organisations to communicate and learn,” he said.
“We’re seeing a convergence of two major shifts — more capable AI agents and a market where upskilling and internal knowledge sharing are now board-level priorities. We intend to build the defining company at that intersection.”
The chancellor, Rachel Reeves, hailed the raise as a sign of the UK’s growing strength in AI. “Synthesia is a UK success story, creating new jobs and opportunities,” she said. “By backing innovators to start, scale and stay in Britain, we can turn the promise of AI into better-paid jobs and long-term economic growth.”
The funding underlines strong investor appetite for enterprise-focused AI platforms and places Synthesia at the forefront of the next wave of workplace automation and digital learning.
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Synthesia raises $200m at $4bn valuation in Google Ventures-led round