1h ago

Gray Swan AI, co-founded by Zico Kolter, raises $40 million to expand security tools for enterprise AI agents

It deploys 15,000 hackers to stress-test frontier AI models

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Original post
Zico Kolter#67@ZICOKOLTEROPGray Swan AIGray Swan AI@GRAYSWANAI

We raised $40M to make AI safe enough to trust. 🦢 Co-led by @WingVC and @MadronaVentures, with @Obviousvc, @Snowflake, @WeAreHRT, @SamsungNext, and @magaracvc. More fuel to deliver on the mission: empowering the world to use AI safely and securely. https://hubs.ly/Q04jdyhp0

9:20 AM · May 28, 2026 View on X
Reposted by
Zico Kolter#67@ZICOKOLTER
POSTZico Kolter#67Zico Kolter@ZICOKOLTER

Thrilled to share that @GraySwanAI raised $40M in Series A funding led by @Wing_VC and @MadronaVentures. Our mission is to empower the world to use AI safely and securely. We look forward pushing the frontier in AI Security!

forbes.com
This AI Startup’s Army Of 15,000 Hackers Pressure Test Claude, GPT-5 And Gemini
Gray Swan works with every major frontier AI lab. Now it’s raised $40 million as it expands to sell security tools to enterprises building AI agents.
4:28 PM · May 28, 2026 · 1.8K Views
REPLYAmin Karbasi#970Amin Karbasi@AMINKARBASI

@zicokolter @GraySwanAI @Wing_VC @MadronaVentures Congrats

Zico KolterZico Kolter@zicokolter

Thrilled to share that @GraySwanAI raised $40M in Series A funding led by @Wing_VC and @MadronaVentures. Our mission is to empower the world to use AI safely and securely. We look forward pushing the frontier in AI Security! https://www.forbes.com/sites/rashishrivastava/2026/05/28/this-ai-startups-army-of-15000-hackers-pressure-test-claude-gpt-5-and-gemini/

4:28 PM · May 28, 2026 · 1.8K Views
4:48 PM · May 28, 2026 · 224 Views