Goodfire is an AI research lab focused on mechanistic interpretability: understanding what happens inside large neural networks and turning that understanding into practical tools for auditing and editing model behavior.
The company positions interpretability as the missing layer for safe enterprise AI deployment - if you can see why a model produced an output, you can fix failures at the source instead of patching symptoms with prompts.
Funding
Goodfire announced a $150 million Series B on February 5, 2026, led by B Capital with participation from Juniper Ventures, Lightspeed Venture Partners, and Menlo Ventures. The round valued the company at $1.25 billion, making it one of the most valuable interpretability-focused startups.