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Promptfoo

Promptfoo, founded in 2024 and based in San Francisco, provides an open-source and enterprise platform for testing, securing, and red-teaming AI prompts. It helps developers and enterprises evaluate LLM behavior, improve reliability, and integrate automated AI safety checks into workflows.

OverviewStructured DataIssuesContributors
Is a
Organization
Organization
Company
Company
B2X
B2B
B2B
CEO
‌
Ian Webster
CTO
‌
Michael D'Angelo
Email Address
Founder
‌
Ian Webster
‌
Michael D'Angelo
Industry
Artificial Intelligence (AI)
Artificial Intelligence (AI)
Security
Security
Investors
Andreessen Horowitz (a16z)
Andreessen Horowitz (a16z)
‌
Insight Venture Partners
Latest Funding Round Date
July 29, 2025
Latest Funding Round Amount (USD)
18,400,000
Latest Funding Type
Series A
Series A
Location
San Francisco
San Francisco
Number of Employees (Ranges)
1 – 10
Phone Number
Total Funding Amount (USD)
18,400,000
Official Website
promptfoo.dev

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