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Promptfoo
Testing, evaluating, and securing AI applications and prompts through automated red-teaming and vulnerability scanning
About Promptfoo
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.
Source: Dealroom company dataAt a glance
- Status
- Acquired
- Founded
- 2024
- Headquarters
- San Francisco, United States
- Employees
- 5
- Open positions
- None listed
- Dealroom signal
- 60.4/100
- Industry
- Security
- Sub-industry
- Data protection, Device security & Antivirus
- Sector
- Cloud Security, Security, Network Security, Developer Tools, Coding, Security Technology, Core AI, Cybersecurity
- Technology
- Artificial Intelligence
- Business model
- SaaS
- Client focus
- b2b
Knowledge graph
More headlines
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 | ↗ |
Growth signals
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.
Similar companies
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed4 investors entered at this stage
Andreessen Horowitz
Tobias Lütke
Stanislav Vishnevskiy
Frederic Kerrest
Series A1 investor entered at this stage
Other known investors2 additional known investors
OpenAI
515 Ventures
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Promptfoo on X, ranked by likes and reposts, corporate channels excluded.
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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