About Promptfoo
Promptfoo is a company based in San Francisco (United States) founded in 2023 by Ian W and Michael D'Angelo.. Promptfoo has raised $23.58 million across 2 funding rounds from investors including Andreessen Horowitz, Tobi Lutke and Stanislav Vishnevskiy. Promptfoo offers products and services including Red Teaming, Guardrails, and Model Security Evaluations. Promptfoo operates in a competitive market with competitors including Cobalt, Pentera, Kolena, Distributional and Openlayer, among others.
- Headquarter San Francisco, United States
- Founders Ian W, Michael D'Angelo
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Sectors
Technology
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Email
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Phone
*********
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Website
*********
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Social
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Annual Revenue
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Net Profit
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EBITDA
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Total Equity Funding
$23.58 M (USD)
in 2 rounds
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Latest Funding Round
$18.4 M (USD), Series A
Jul 01, 2025
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Investors
Andreessen Horowitz
& 4 more
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Employee Count
Employee Count
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Products & Services of Promptfoo
Promptfoo offers a comprehensive portfolio of products and services, including Red Teaming, Guardrails, and Model Security Evaluations. The company's diverse product and service offerings are designed to meet the evolving needs of its customers, address market demands, and provide comprehensive solutions that drive value creation and customer satisfaction across various segments and use cases.
Generates customized attacks to identify AI vulnerabilities.
Implements safeguards against prompt injections and data leaks.
Evaluates AI models for risks like toxic content generation.
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Software Development Team
3 people
Founding Team
2 people
Co Team
1 people
Leadership Team
1 people
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Funding Insights of Promptfoo
Promptfoo has successfully raised a total of $23.58M across 2 strategic funding rounds. The most recent funding activity was a Series A round of $18.4 million completed in July 2025. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding Total Funding
- Total Rounds 2
- Last Round Series A — $18.4M
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First Round
First Round
(28 Jun 2024)
- Investors Count 5
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jul, 2025 | Amount | Series A - Promptfoo | Valuation | Insight Partners | |
| Jun, 2024 | Amount | Seed - Promptfoo | Valuation | a16z |
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jul, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Jan, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
Investors in Promptfoo
Promptfoo has secured backing from 5 investors, including venture fund and angel investors. Prominent investors backing the company include Andreessen Horowitz, Tobi Lutke and Stanislav Vishnevskiy. This diverse investor base provides strategic capital, industry expertise, and valuable network connections that support the company's growth initiatives, market expansion, and long-term value creation.
| Investor | Description | Founded Year | Domain | Location |
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Venture capital investments in technology sectors are handled by Andreessen Horowitz.
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Founded Year | Domain | Location | |
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Investment firm scaling software and technology companies from early to late stages.
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Founded Year | Domain | Location | |
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Tobi Lutke |
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Founded Year | Domain | Location |
| Investor | Description | Founded Year | Domain | Location |
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Single family office of Amitabh Bachchan, founder of Amitabh Bachchan Corporation or AB CORP
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Founded Year | Domain | Location | |
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Startup ecosystems are ignited through strategic investments by Signite Partners.
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Founded Year | Domain | Location | |
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Venture capital is directed toward companies in multiple sectors.
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Founded Year | Domain | Location | |
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Venture capital is invested in cybersecurity, fintech, and AI startups.
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Founded Year | Domain | Location |
Investments & Acquisitions by Promptfoo
| Company Name | Description | Domain | Location | Founded Year | Amount |
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Bionic investment advisor platform
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2016 | ||||
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Fine Asian gourmet food is offered by an internet-first restaurant.
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2016 | ||||
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Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
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2014 | ||||
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Fine Asian gourmet food is offered by an internet-first restaurant.
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2016 |
Financial Statements - Promptfoo
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jul, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Jan, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
Promptfoo Comparisons
Competitors of Promptfoo
Promptfoo operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Cobalt, Pentera, Kolena, Distributional and Openlayer, among others. This competitive environment drives innovation, market differentiation, and strategic positioning as companies strive to capture market share and deliver value to their customers. Understanding the competitive dynamics is crucial for assessing market positioning, identifying growth opportunities, and navigating the challenges inherent in a competitive marketplace.
| Company Name | Domain | Founded year | HQ Location | Description |
|---|---|---|---|---|
| domain | founded_year | HQ Location |
Application security testing is delivered via a cloud-based platform.
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| domain | founded_year | HQ Location |
Cloud-based penetration testing solutions are provided for cybersecurity validation.
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| domain | founded_year | HQ Location |
ML model testing platform for NLP, LLMs, computer vision, and structured data
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| domain | founded_year | HQ Location |
AI technologies are tested and evaluated via a dedicated platform.
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| domain | founded_year | HQ Location |
AI evaluation and observability platform is provided for enterprise applications.
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| domain | founded_year | HQ Location |
Cloud-based penetration testing software is provided for vulnerability assessments.
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| Company Name | Domain | Founded year | HQ Location | Description |
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| domain | founded_year | HQ Location |
Multiple services are booked via an app-based platform.
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| domain | founded_year | HQ Location |
On-demand services are booked through an app-based platform.
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| domain | founded_year | HQ Location |
App based platform offering on demand delivery and ride-hailing services
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| domain | founded_year | HQ Location |
Operates an on-demand hyperlocal delivery app for food and groceries.
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Frequently Asked Questions about Promptfoo
When was Promptfoo founded?
Promptfoo was founded in 2023 and raised its 1st funding round 1 year after it was founded.
Where is Promptfoo located?
Promptfoo is headquartered in San Francisco, United States. It is registered at San Francisco, California, United States.
Who is the current CEO of Promptfoo?
Ian W is the current CEO of Promptfoo. They have also founded this company.
Is Promptfoo a funded company?
Promptfoo is a funded company, having raised a total of $23.58M across 2 funding rounds to date. The company's 1st funding round was a Seed of $5.18M, raised on Jun 28, 2024.
What does Promptfoo do?
Promptfoo was founded in 2023 in San Francisco, United States, as an open-source platform in the AI software sector. LLM applications are tested and debugged through customized scans that identify vulnerabilities, including PII leaks, insecure tool use, jailbreaks, harmful content, competitor endorsements, political statements, and medical or legal advice. Performance optimization is supported for developers operating in this field.
Who are the top competitors of Promptfoo?
Promptfoo's top competitors include Cobalt, Pentera and Distributional.
What products or services does Promptfoo offer?
Promptfoo offers Red Teaming, Guardrails, and Model Security Evaluations.
Who are Promptfoo's investors?
Promptfoo has 5 investors. Key investors include Andreessen Horowitz, Tobi Lutke, Stanislav Vishnevskiy, Frederic Kerrest, and Insight Partners.
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