Promptfoo
Engineering Software · California, United States · 11-50 Employees
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Overview
Headquarters
2261 Market St Ste 86012, San Francisco,...Website
promptfoo.devRevenue
<$5 MillionIndustry
ZI Rank: 1
Signal Type
Dec
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ZI Rank
2
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About Promptfoo
Promptfoo is an open-source tool that helps developers test, evaluate, and secure AI prompts across multiple language models using structured, automated workflows.Explore more
Promptfoo Org Chart
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Promptfoo financials insights
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2024
Angel/Seed
$5M
2025
Private Equity
$17.5M
Series A
$18.4M
Promptfoo Tech Stack
A closer look at the technologies used by Promptfoo
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Mergers & Acquisitions (M&A)
Mergers & Acquisitions, Acquisitions, Mergers
Event
Events, Sales, Digital Technology, Employee Relations, Field /Outside Sales, Change Management, Company Culture & Policy, Customer Experience, Digital Transformation, Field Marketing, HR Operations, Operations
Event
Person-Based
Ian Webster, Co-founder & Chief Executive Officer, appeared on a podcast called "AI + a16z" on 12/02/2025. Topics discussed include AI Security, Social Engineering, Vulnerability Testing.
Events, Podcast
Open Position
Funding
Funding
Promptfoo News & Media
OpenAI to acquire Promptfoo to strengthen security testing for enterprise AI agents
OpenAI said it plans to acquire AI security startup Promptfoo to strengthen safety and evaluation capabilities for enterprise AI agents. The deal aims to integrate automated security testing into OpenAI's Frontier platform, helping businesses identify vulnerabilities and manage risks as they deploy AI systems in real-world workflows.OpenAI acquires Promptfoo to secure its AI agents
This deal underscores how frontier labs are scrambling to prove their technology can be used safely in critical business operations.Promptfoo Raises $18.4 Million for AI Security Platform - SecurityWeek
Promptfoo has raised $18.4 million in Series A funding to help organizations secure LLMs and generative AI applications.
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Promptfoo is an open-source tool that helps developers test, evaluate, and secure AI prompts across multiple language models using structured, automated workflows.... Read More
