The round was led by B Capital, with participation from existing investors Juniper Ventures, Menlo Ventures, Lightspeed Venture Partners, South Park Commons, and Wing Venture Capital, and new investors DFJ Growth, Salesforce Ventures, Eric Schmidt, and others. This funding, coming less than a year after its Series A, will enable Goodfire to advance frontier research initiatives, build the next generation of its core product, and scale partnerships across AI agents and life sciences.

Goodfire is a research company and public benefit corporation based in San Francisco, dedicated to using interpretability to understand, learn from, and design AI systems. Goodfire's mission is to build the next generation of safe and powerful AI-not by scaling alone, but by understanding the intelligence we're building. The goal is to make AI that can be understood, debugged, and shaped like software.