Woofun AI reports that Paris-based AI voice startup Gradium has completed a $100 million seed financing round, with Nvidia joining as a new investor. The company, spun off from Kyutai AI Lab and co-founded by Neil Zeghidour, previously exited stealth mode in December with $70 million in funding from FirstMark Capital, Eurazeo, DST Global Partners, Eric Schmidt, and Xavier Niel. Gradium intends to utilize the capital to establish a Bay Area office for talent acquisition and has secured Renault as a client.