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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
Valuation & funding
Promptfoo funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| ACQUISITION✓Exit | Mar 2026 | $0 | — | OpenAI | ↗ |
| SERIES A✓Equity / VC | Jul 2025 | $18M | $74M | Andreessen Horowitz · Insight Partners | ↗ |
| SEED✓Equity / VC | Jul 2024 | $5M | $20M | Tobias Lütke · Stanislav Vishnevskiy · Frederic Kerrest · Andreessen Horowitz | ↗ |
Financials
Workforce over time
Available workforce history. Financial fields without reported data are omitted.
| Year | Employees |
|---|---|
| 2026 | 3 |
| 2025 | 22 |
| 2024 | 5 |
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.
Comparisons
Promptfoo compared with similar companies
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Talent graph
Promptfoo's talent
Source: Dealroom Talent Intelligence.
Global footprint
Where Promptfoo has talent and traffic
team presence
In the news
Latest news about Promptfoo
Recent press, funding announcements, and product moves mentioning Promptfoo — open to read from the original sources.
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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