The round was led by Andreessen Horowitz (a16z). The financing expands the company's $25 million Series A from August 2025 and brings total funding to $65 million since the company's founding in 2024. Returning investors include Footwork, CRV, Bloomberg Beta, Flex Capital, Shaper Capital, and more.

Protege is an AI data platform designed to unlock real-world data at scale. By enabling high-quality, cross-vertical data networks, Protege helps AI teams overcome the most critical bottleneck in AI development and deploy more capable, reliable models across industries such as healthcare, media, audio, and beyond.