# Goodfire

> Goodfire is a San Francisco AI interpretability lab and public benefit corporation that helps teams inspect, monitor and shape neural networks. Its Ember platform has supported customer work in privacy and biological discovery, while Silico turns research questions into inspectable experiments and reports.

- **Founded:** 2024
- **Headquarters:** San Francisco, United States
- **Founders:** Eric Ho (Co-founder and CEO), Daniel Balsam (Co-founder and CTO), Thomas McGrath (Co-founder and Chief Scientist)
- **Products:** Ember, Silico, Research partnerships
- **Notable:** Rakuten deployed a PII guardrail developed with Goodfire; Goodfire reports 15-500x cost savings versus comparable LLM-as-a-judge approaches., With Prima Mente, identified candidate blood-borne Alzheimer’s biomarkers undergoing experimental validation., Announced a $150 million Series B at a $1.25 billion valuation in February 2026.

## Products & services

- **Ember** — Interpretability platform used to inspect model internals, train probes and steer behavior; deployed in customer research partnerships.
- **Silico** — Research agent and desktop workflow that plans and runs experiments, tracks them on a timeline and produces inspectable reports.
- **Research partnerships** — Goodfire researchers work with partner teams on model safety and scientific discovery problems.

## Achievements

- Rakuten deployed a PII guardrail developed with Goodfire; Goodfire reports 15-500x cost savings versus comparable LLM-as-a-judge approaches.
- With Prima Mente, identified candidate blood-borne Alzheimer’s biomarkers undergoing experimental validation.
- Announced a $150 million Series B at a $1.25 billion valuation in February 2026.
- Published open-source interpretability artifacts and research across language, vision, genomics and safety.
- Completed a SOC 2 Type II audit with no exceptions identified, according to Goodfire.

## Latest updates

- **2026-09** — Published research on activation probes for reward hacking and a practical guide to sparse autoencoders.
- **2026-08** — Announced up to $1 million of free Silico usage grants for academic and nonprofit researchers.
- **2026-05** — Announced SOC 2 Type II compliance.
- **2026-02** — Raised a $150 million Series B led by B Capital at a $1.25 billion valuation.

## Links

- Website: https://www.goodfire.com/
- LinkedIn: https://www.linkedin.com/company/goodfire-ai/
- Twitter/X: https://x.com/goodfireAI
- GitHub: https://github.com/goodfire-ai

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Profile page: https://yespress.io/goodfire
Published by YesPress — https://yespress.io
Last updated: 2026-09-30