Saturday, September 20, 2025

Promptfoo Secures $18.4M in Series A Funding to Develop a Comprehensive AI Security Stack

Unlocking AI Security with Promptfoo: A Game Changer in Tech

Promptfoo, spearheaded by Insight Partners and backed by Andreessen Horowitz, has successfully raised $18.4 million in Series A funding. Founded in 2024, Promptfoo addresses a significant gap in AI security, empowering over 125,000 developers and over 30 Fortune 500 companies to navigate complex architectures confidently.

Key Highlights:

  • Massive Adoption: 125,000+ developers and 40+ Fortune 500 companies on board.
  • Innovative Solutions: Tackling security challenges brought by AI tools like agents, RAGs, and MCP.
  • Expertise on Board: Ganesh Bell’s insights position Promptfoo to redefine AI security.

Vision for the Future:

  • Embracing robust workflows for agent collaboration.
  • Integrating deep testing protocols to ensure security throughout development cycles.

Join the Movement:

  • Get Involved: Try our free open-source tools or request an enterprise demo.
  • Explore Opportunities: We’re hiring!

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