Nam Nguyen
Co-founder & COO, Truth Systems
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Truth Systems
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Latest conversation · Founders in Motion
How He Turned 3 YC Rejections into a $25M AI Governance Company | Nam Nguyen, TruthSystems (YC S25)About Truth Systems
Truth Systems is a San Francisco start-up that sells AI governance software to law firms. Its main product, Charter, checks users' prompts against firm policies and client rules before they reach an AI tool, blocks those that break the rules and keeps audit logs. Alex Mac and Nam Nguyen, who both worked on AI research at Stanford Law, founded it in 2023. It went through Y Combinator's Summer 2025 batch and raised a US$4 million seed round led by Gradient in October 2025.
- Sector
- AI governance for law firms
- Business model
- B2B SaaS
- Founders
- Alex Mac, Nam Nguyen
- Headquarters
- San Francisco, US
- Team size
- 6
- Latest round
- $4M Seed, led by Gradient (Oct 2025)
- Customers
- Arnall Golden Gregory
Sources: truthsystems.ai, ycombinator.com, artificiallawyer.com
The people on Day One.
Hear from the team.
Milestones.
- Founded in San Franciscoycombinator.com
- Y Combinator Summer 2025 batchycombinator.com
- Raised US$4M seed led by Gradientartificiallawyer.com
In the news.
Backed by.
Gradient, Lightspeed Venture Partners, F-Prime Capital, Y Combinator, The LegalTech Fund, Pear VC, Silver Circle, WndrCo, Kaz Nejatian, Lauren Wagner.
Sources: artificiallawyer.com
Spot something wrong? Suggest a correctionUpdated 29 October 2026
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