An AI Hacker for the companies Greylock backs.
Tenzai is an autonomous pentester with the craft of an elite human - ranked in the top 1%. Greylock's portfolio gets priority access, preferred terms, and a first report in hours.
- 120X FasterCompliance reporting, from weeks to hours
- Top 1%Across top hacking platforms
- $75M SeedFrom Greylock, Battery, Lux
Start with one application. First report in hours.
A pentest that keeps pace with how you ship.
4 things Greylock portfolio companies get when they engage Tenzai - priced and scoped for the stage you're at.
Pass enterprise security reviews faster.
Audit-ready pentest evidence you can share with enterprise buyers in vendor reviews — without waiting weeks for a traditional manual engagement.
Find real, exploitable risk.
Tenzai runs AI-powered offensive testing across your web app and APIs to uncover issues that actually matter: authentication and access-control gaps, injection, business-logic abuse, and chained vulnerabilities scanners cannot see.
Choose the right cadence as you scale.
Start with a one-time compliance report. Move to release-ready or continuous testing as your product and attack surface grow — multi-app and frequent-release cadences supported.
Audit-ready deliverables, on demand.
Optional human-signed report for SOC 2, ISO, and procurement requirements. Clean artifact, attacker reasoning, and a remediation path — the same output an excellent human pentester would produce.
Top 1%
120x
25×
0→100%
What customers say after a Tenzai AI hacker run.

See what a top-1% hacker finds in your application.
Most Tenzai engagements start with a single application and a single conversation. The first report arrives in hours.
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