Google Ventures led the Series E financing round, which valued the video platform at $4bn.
"Synthesia is a UK success story, creating new jobs and opportunities in this country. It shows that by backing innovators to start, scale and stay in the UK through better access to finance and generous tax reliefs, we can turn the promise of AI into better-paid jobs and long-term growth across the UK."
The London-based AI start-up exceeded its target in an oversubscribed round backed by angel syndicates and customer-investors.
"Community has always been at the heart of LaunchLemonade. During this pre-seed cycle, that community compounded trust and carried our story and helped us show what LaunchLemonade can offer in the AI space."
The Series A round was led by Acton Capital to accelerate artificial intelligence features and international growth.
"Eolas has always been about solving a very practical problem: giving healthcare professionals fast, reliable access to the knowledge they need, when they need it. This is especially important in acute settings, where staff are under pressure to make decisions quickly and safely – particularly in the winter. As AI develops, the next phase is about making that access even more usable, so staff can ask a question and get a clear, evidence-backed answer straight away, in plain language."
The Series A round was led by Blackbird Ventures and will support international expansion and product development.
"Trades businesses are overwhelmed by calls, emails, and admin – and that friction directly costs them revenue. We’re building AI agents that work like effective front-office staff: answering every call, booking every job, and integrating deeply into the systems trades already use."