AI security startup Repello AI raises $1.2 million in a seed funding round led by Venture Highway, others

Repello AI, an AI security startup that has offices in San Francisco and Bengaluru, has raised $1.2 million in a seed funding round led by Venture Highway (acquired by General Catalyst), pi Ventures, Entrepreneur First and angel investors including Charles Songhurst, Board member- Meta, Vivek Raghavan, CEO- Sarvam.ai, and Satya Vyas, CEO- Project Hero. 

The startup will use the raised capital to accelerate product development and expand the platform’s red teaming and threat intelligence capabilities, scale its go-to-market efforts and build strategic partnerships and integrations.

Founded in 2024 by IIT Roorkee alumni Aryaman Behera and Naman Mishra, Repello AI is an AI security startup that proactively protects Generative AI applications from an evolving range of threats, including prompt injection attacks, sensitive data leaks, data poisoning, and other vulnerabilities - to prevent disruption, financial losses, and reputational damage. 

By integrating deep cybersecurity and advanced machine learning expertise, the startup ensures secure AI deployment, simplifies compliance, and quickly converts vulnerabilities into clear, actionable fixes.

Repello AI’s flagship product, ARTEMIS (Automated Red Teaming Engine for Mapping, Identification and Scanning), is the first continuous security platform built specifically for GenAI applications. It shifts LLM security from reactive to proactive by continuously running millions of automated adversarial tests across text, image and audio to deliver actionable mitigation strategies, integrations, and guardrails.

Repello Guard, the startup's threat monitoring and guardrails solution, provides runtime security for AI applications across modalities, detecting AI-specific threats such as unsafe output, competitor mentions and system prompt leaks.

ARTEMIS’s next-generation adversarial testing combined with Repello Guard’s real-time input/output filtering and runtime monitoring, provides a comprehensive solution that accelerates safe AI deployment, ensures compliance and turns emerging threats into clear, actionable fixes.

Aryaman Behera, Co-Founder & CEO of Repello AI said, “We're at an inflection point where AI adoption is accelerating faster than security solutions can keep pace. Enterprises are deploying generative AI across every function, but they're doing it with yesterday's security playbook. The best defense is a strong offense, and we're ensuring our customers can proactively identify and neutralize emerging AI security threats before they become enterprise risks. The market needs a new approach - one that's as sophisticated and scalable as the AI systems it's protecting. That's exactly what we're building.”

“As GenAI transforms industries, its security architecture cannot be an afterthought. From day one, our goal has been to stay ahead of emerging threats. With our products, we’re reimagining AI security from the ground up - merging proactive adversarial testing with automated scale to preempt threats before they are exploited,” added Naman Mishra, Co-Founder & CTO of Repello AI.

“Generative AI introduces a fundamentally new threat landscape—one that traditional cybersecurity solutions weren’t built for. Accurately detecting and mitigating threats in the dynamic GenAI attack surface is a complex challenge. Having built in security and AI since their college days, Aryaman and Naman have built a GenAI-native security solution to go beyond perimeter defense, identify unknown threats and optimize for high precision and recall,” said Roopan Aulakh - Managing Director, pi Ventures.