Promptfoo vs Robust Intelligence

Promptfoo is an open-source CLI and library for evaluating LLM prompts, models, RAGs, and agents through automated benchmarks and matrix comparisons, alongside red-teaming for security vulnerabilities like prompt injections, jailbreaks, PII leaks, and insecure tool use. It differentiates via developer-first local execution, CI/CD integration, and modular plugins covering 50+ attack types with community-driven threat intelligence. Targeted at developers and security teams in enterprises (127 Fortune 500 users), it supports self-hosting to avoid vendor lock-in. Enterprise adds collaboration, monitoring, SSO, and compliance dashboards. Acquired by OpenAI in March 2026 for integration into Frontier platform, remains open-source with SaaS/on-prem options.Promptfoo homepagePromptfoo docsPromptfoo pricing

Robust Intelligence was a San Francisco-based AI security company co-founded in 2019 by Harvard computer science professor Yaron Singer and Kojin Oshiba. The company pioneered the concept of an 'AI Firewall' — a purpose-built platform that validates, stress-tests, and protects AI models from development through production. Key capabilities included algorithmic red teaming, automated model assessment, and proactive AI risk mitigation aligned to OWASP and MITRE ATLAS standards. Robust Intelligence was acquired by Cisco in October 2024 for a reported $400M and has been foundational to the development of Cisco AI Defense and Cisco Foundation AI. Its technology is now integrated into the Cisco Security Cloud, providing threat protection against prompt injection, data poisoning, jailbreaking, and unintentional model outcomes. The company raised $44M prior to acquisition across three rounds.