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PromptFoo
San Francisco, US · Founded 2024 · Delaware corporation · 4 employees on LinkedIn · 3 known investors
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Promptfoo develops security and testing tools for generative AI applications, serving engineering teams building AI products at scale.
Founders & leadership
PromptFoo was founded in 2024 by Michael D'Angelo, Ian W Webster, and Ian W..
Investors · 3
Andreessen Horowitz✓ confirmed by PromptFooMenlo Park · $500K – $50M
How we know: the company's own site · a16z's portfolio · a partner's Signal profile · Not right? Tell us
Insight Partners✓ confirmed by PromptFooNew York · $120M – $350M
How we know: the company's own site · a partner's Signal profile · open dataset · 5k.vc investor directory · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$22.7M disclosed across 2 rounds · 2024–2025
▶$17.5MraisedJul 2025 · 3 investors · OtherRule 506(b)
▶$17.5MraisedJul 2025 · 3 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Michael D'AngeloDirector
- Ian W WebsterExecutive Officer, Director, Promoter
- Ganesh BellDirector
- Offering amount
- $18.4M
- Amount sold
- $17.5M
- First sale
- Jul 2025
- Incorporated
- Corporation, Delaware, 2024
- Federal exemptions
- 06b
▶$5.2MraisedAug 2024 · 7 investors · OtherRule 506(b)
▶$5.2MraisedAug 2024 · 7 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Michael D'AngeloDirector
- Ian W WebsterExecutive Officer, Director, Promoter
- Offering amount
- $5.3M
- Amount sold
- $5.2M
- First sale
- Jun 2024
- Incorporated
- Corporation, Delaware, 2024
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Founder mafia
2 people who came through PromptFoo went on to found or lead other companies.
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Frequently asked questions
- What does PromptFoo do?
- Promptfoo develops security and testing tools for generative AI applications, serving engineering teams building AI products at scale.
- Who founded PromptFoo?
- PromptFoo was founded by Michael D'Angelo, Ian W Webster, Ian W. in 2024.
- Who are PromptFoo's investors?
- PromptFoo's investors include Andreessen Horowitz, Insight Partners, Uncorrelated Ventures.
- How much funding has PromptFoo raised?
- PromptFoo has disclosed $22.7M raised across 2 rounds.
- Where is PromptFoo headquartered?
- PromptFoo is headquartered in San Francisco, US.