Goodfire
Goodfire is an AI interpretability research company that helps customers debug and shape AI systems, particularly in life sciences. The San Francisco-based firm has raised $207M from investors including B Capital and Lightspeed, reaching a Series B in 2026. It employs 67 people.
The growth story
Goodfire grew from 1 to 67 employees between 2023 and 2026, raising $207M along the way, most recently a Series B in February 2026.
About
Goodfire sells tools and services that help companies understand how their AI systems work, particularly in analyzing scientific data. Its customers use these tools to debug AI models and extract insights, especially in life sciences applications.
The company has raised $207M in just two years since its 2024 founding, reaching Series B in early 2026. Its 67-person team focuses on research, drawing from AI interpretability pioneers at OpenAI, DeepMind, and top universities.
Founders and leadership
Goodfire is led by a research-heavy team, with 12 researchers forming its largest function. The company has a median tenure of just one year, suggesting rapid team evolution since its 2024 founding.
The Goodfire org chart
Eric Ho (Co-Founder & CEO) leads 9 mapped leaders with 3 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 31 (+158% YoY), Research 11 (+83% YoY), Business Development 6 (0% YoY), Operations 4 (+300% YoY), Entrepreneurship 4 (+33% YoY).
Talent flow
Goodfire recruits heavily from Stanford (7 hires) and MATS Research (5), with RippleMatch as its top talent source (8 hires). Alumni have moved to Anthropic (2) and Google (1), among others. The team includes graduates from Stanford (9), Yale (4), and Oxford (3).
Most common previous employers of Goodfire staff: RippleMatch (8), Stanford University (7), MATS Research (5), Google (4), Harvard University (4), Glean (3). Former Goodfire employees most often moved to Anthropic (2), Google (1), Abridge (1), Sabi (1), Meta (1), Prometheus (1).
Alumni worth knowing
Web traffic
Traffic mix: 41% direct, 30% search, 19% social, 0% paid.
What this company is made of
Most common skills at Goodfire: Python (Programming Language) (38), SQL (22), Machine Learning (22), Research Skills (17), Java (17), Deep Learning (17), JavaScript (17), C++ (17).
Where the team actually sits
Goodfire people are concentrated in California, United States (23), San Francisco Bay Area (10), Massachusetts, United States (5), United States (4).
Frequently asked
Goodfire has 67 employees as of September 2026.
Goodfire has raised $207M in total, most recently a Series B round in February 2026.
Goodfire was founded in 2024 by Eric Ho, Daniel Balsam.
Eric Ho (Co-Founder & CEO) sits at the top of Goodfire's reporting structure, with 3 direct reports.
The most common previous employers of current Goodfire staff are RippleMatch (8 people), Stanford University (7 people), MATS Research (5 people).
Former Goodfire employees most often move to Anthropic (2), Google (1), Abridge (1).
The most common skills among Goodfire staff are Python (Programming Language), SQL, Machine Learning, Research Skills, Java.
Goodfire staff are concentrated in California, United States (23), San Francisco Bay Area (10), Massachusetts, United States (5).
Goodfire has about 31 people in Engineering, up 158% over the past year, as of September 2026.
Goodfire has about 11 people in Research, up 83% over the past year, as of September 2026.
Computed from 55 current and 17 former Goodfire profiles, as of September 2026. Source: Crustdata.
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