AI Security Platform Promptfoo Lands $18.4M Series A Funding

Promptfoo Inc. has secured $18.4 million in Series A funding. Global software investor Insight Partners led the round. Existing investor Andreessen Horowitz also participated, supporting the company's development of an AI security and evaluation platform.

Founded in 2024, Promptfoo provides robust AI security testing and risk management services. This includes red teaming, guardrails, and continuous monitoring. The company evaluates various parts of the artificial intelligence stack, including model behavior and data pipelines.

Advancing AI Security Solutions

Promptfoo embeds automated red team tests directly into the build and release process. This provides actionable remediation guidance for AI security teams. The company's security spans attack objective generation, exploit search, and regression testing, offering a continuous workflow for hardening applications. Furthermore, adaptive guardrails and monitoring prevent risks like prompt injection and data leakage.

The company addresses unique risks introduced by new architectures, such as retrieval-augmented generation. It also integrates with protocols like Model Context Protocol, enhancing overall machine learning security. Promptfoo's solutions help enterprises manage vulnerabilities, distinguishing its focused approach from broader cybersecurity firms. Similarly, companies like Robust Intelligence and Arthur AI also work to secure AI deployments.

Promptfoo's open-source tools serve over 100,000 developers and more than 30 Fortune 500 companies.