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Repello AI

start up
United States - San Francisco, Bay Area
  • 12/06/2025
  • Seed
  • $1,200,000

We help you continuously red-team your GenAI applications against ever-evolving AI threat landscape.


Related People

Aryaman BeheraCo Founder

Aryaman Behera United States - San Francisco, California

“Our customer support AI just started giving cooking recipes instead of tech support. We're trending on X," your CTO mutters, coffee going cold.

“But the guardrails were titanium-grade," your head of AI stammers.

"But we manually tested it against every prompt injection in our book," your security lead protests

You feel your stomach drop as you contemplate the inevitable board meetings, customer notifications, and potential regulatory investigations ahead.

Here's the reality: 89% of organizations are using or exploring LLMs, yet only 5% feel confident in securing them. AI security isn't optional anymore – it's essential.

To secure your AI systems without killing innovation, you need a strategy:

-> Identify the attack surface: AI systems face unique vulnerabilities - from prompt injection to training data poisoning. Understanding where your AI systems are vulnerable is the first step to securing them.

-> Build security guardrails, intelligently: While it's tempting to lock down your AI systems completely, this can severely limit their functionality. The key is implementing smart boundaries - like input validation, output filtering, and runtime monitoring - that protects against attacks while preserving performance.

-> Implement continuous AI red-teaming: Traditional penetration testing isn't enough for AI systems. You need ongoing adversarial testing that evolves with your models. This includes testing for data extraction, prompt injection, and model manipulation attempts.


Attack is the best form of defense. So, we built Repello AI to help organizations secure their GenAI applications from an attacker's perspective. We've been fortunate to work with leading Fortune 500 companies and AI unicorns, helping them safeguard their AI applications.

Sold my last company in 2nd year at IIT Roorkee. Now, building Repello AI, backed by General Catalyst, pi Ventures and prominent angel investors from Silicon Valley.

Head to https://repello.ai today!

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