Arcee AI Raises Series B at $1 Billion Valuation to Expand Open-Weight Models

Arcee AI has raised a Series B round at a $1 billion pre-money valuation, giving the U.S. open-weight model startup fresh capital as it tries to narrow the gap with Chinese open AI systems. The financing was led by Vista Equity Partners, Cambium Capital and Emergence Capital, with participation from Microsoft's M12, AI10 Ventures, Hitachi, IAG, P7 and Wipro; the round was reported at at least $150 million.