Startup profile · funding coverage
Promptfoo
LLM evaluation and red-teaming toolkit for prompt/security testing.
Stage
seed
Status
private
Coverage
full
Why Promptfoo is interesting
Promptfoo addresses evals and LLM security — the unsexy layer every production AI team eventually needs.
Key facts
- Series A (Jul 2025): $18.4M led by Insight Partners; a16z participated (public reporting)
- Seed (Jul 2024): $5M led by a16z (Promptfoo blog)
- Co-investors: angel executives only in seed round (Shopify, Discord, Okta CEOs)
Investors in our directory
Funds linked from Promptfoo's profile — open a fund page for stage focus and related deal articles.
Industries
AI & Machine Learning Developer Tools Cybersecurity
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FAQs about Promptfoo
Funding context and why this company shows up in venture coverage.
Promptfoo counts Andreessen Horowitz (a16z) among its investors, alongside Insight Partners, per public funding announcements.
We track a16z-backed companies that are strategically relevant for founders and investors following AI, American Dynamism, crypto, bio, and enterprise software.
Last updated: 2026-07-24