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Promptfoo

Cybersecurity · United States · Founded 2024

Testing, evaluating, and securing AI applications and prompts through automated red-teaming and vulnerability scanning MoreLess

Promptfoo is a pioneering cybersecurity company that leverages advanced language models to simulate attacks on applications, helping businesses identify and mitigate vulnerabilities. By employing adaptive red teaming techniques, Promptfoo creates customized attacks tailored to each client's specific risks and guardrails. This approach allows companies to proactively strengthen their defenses against potential threats, including direct and indirect prompt injections, jailbreaks, data leaks, and more. Promptfoo's solutions are particularly appealing to enterprises, as they have been battle-tested at scale and are trusted by numerous Fortune 500 companies. The company's tools are designed to be developer-friendly, offering a command-line interface and live reloads without requiring SDKs or cloud dependencies. This flexibility enables businesses to deploy Promptfoo's solutions quickly, whether through a managed cloud service or on-premises enterprise solutions. By focusing on security-first principles, Promptfoo empowers businesses to move swiftly while ensuring robust protection against evolving cyber threats. The company's commitment to innovation and customer needs has also garnered support from a large open-source developer community, further solidifying its position as a leader in AI-driven cybersecurity solutions.

Company overview

Promptfoo company information

The essential company record, classifications and operating signals in one place.

Status
Acquired
Founded
2024
Headquarters
United States
Employees
5
Open positions
None listed
Dealroom signal
60.4
client focusb2btechnologyArtificial Intelligencesub industryData protectionsub industryDevice security & Antivirusbusiness modelSaaSindustrySecuritysectorCloud SecuritysectorSecuritysectorNetwork SecuritysectorDeveloper ToolssectorCodingsectorSecurity TechnologysectorCore AIsectorCybersecurity

Valuation & funding

Promptfoo funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONExit Mar 2026 $0 OpenAI
SERIES AEquity / VC Jul 2025 $18M $74M Andreessen Horowitz · Insight Partners
SEEDEquity / VC Jul 2024 $5M $20M Tobias Lütke · Stanislav Vishnevskiy · Frederic Kerrest · Andreessen Horowitz
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Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 3
2025 22
2024 5
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Growth signals

Promptfoo website traffic

Latest recorded traffic for Promptfoo is 180K monthly website visits, down 5.3% over the last three months. Promptfoo's team declined 77.3% over the past year.

Latest monthly visits180K 3-month web change-5.3% 1-year team growth-77.3%
Monthly website visits25 observations · Jul 2024–Jul 2026
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Comparisons

Promptfoo compared with similar companies

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Talent graph

Promptfoo's talent

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Team profiled 5 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

7 investors on Promptfoo's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 4 investors entered at this stage
Andreessen Horowitz
Tobias Lütke
Stanislav Vishnevskiy
Frederic Kerrest
Series A 1 investor entered at this stage
Other known 2 additional known investors
OpenAI
515 Ventures

Global footprint

Where Promptfoo has talent and traffic

Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

In the news

Latest news about Promptfoo

Recent press, funding announcements, and product moves mentioning Promptfoo — open to read from the original sources.

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Market sentiment

What the market is saying about Promptfoo

An AI-synthesized read of the highest-engagement posts about Promptfoo on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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