Antigen
Continuous offensive security for the enterprise.
Why it ranks #570
Antigen, an AI pentester from YC F25, ranks #570 of 999 AI agents and #9 of 12 in Pentester, with a score of 2.3 of 10. Data as of .
The score adds four parts, each 0 to 10, by weight. Every point comes from public evidence. How scoring works ·
- Proof 0 × 30% 0.0
- Scale 3 × 30% 0.9
- Momentum 2 × 25% 0.5
- Autonomy 6 × 15% 0.9
- = 2.3
- 0
Proof
Do customers use it? 30% of the score
No public claims of customers or revenue yet.
Not found: revenue or growth (+4), named customers (+3), a customer result (+2), a customer count (+2), work done at scale (+2)
- 3
Scale
Is there a real company behind it? 30% of the score
5 people.
- +35 people on its YC page5 to 9 people
Not found: funding round in its news (+3)
- +3
- 2
Momentum
Is it shipping and growing now? 25% of the score
Shows hiring.
- +2
Not found: launch YC post in the last 6 months (+3), new traction claim in the last 6 months (+2), funding news in the last year (+2), a batch in the last year (it is YC Fall 2025) (+1)
- 6
Autonomy
How much of the job does it do on its own? 15% of the score
Supervised agent: takes actions in other systems; a person approves key steps.
- +6Level 2 of 4: Supervised agentTakes actions in other systems; a person approves key steps.
What the model read
- Acts in other systems: 84% likely
- Finishes whole tasks: 32% likely
- Calls itself an agent: 60% likely
Level 2: Takes actions in other systems; a person approves key steps.
- +6
About Antigen
Antigen is an AI adversary for the enterprise. It maps, exploits, and secures your attack surface through nightly automated offensive testing and monthly human red team assessments. Every finding is delivered with traces, reproduction steps, and remediation directly in GitHub, Linear, or the Antigen Platform.
We work with companies in financial services, healthcare, retail, and government where security is trust.
Read more
We're backed by Lightspeed, DST Global, and Susa Ventures.
Founders
- Saad JamalFounder/CTO
- Abdullah NaumanFounder
Launches and news
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- 1
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