Public story · 2026-03-10 · source-backed

OpenAI Acquires Promptfoo — Security Goes Platform

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2026-03-10

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source-backed

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$86M valuation, used by 25% of Fortune 500. Automated red-teaming, agentic workflow evaluation, and compliance monitoring integrated into OpenAI Frontier. Open-source offering maintained. Standalone agent security vendors face absorption risk. TechCrunch

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promptfoo — LLM Red Teaming (+718 stars/day, 12.5K total)
Open-source framework for testing, evaluating, and red-teaming LLM prompts, agents, and RAG systems. Covers OWASP LLM Top 10. Used by 127 Fortune 500 companies. Now acquired by OpenAI but committed to continuing the open-source offering. The de facto standard for AI pentesting...

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techcrunch.com/2026/03/09/openai-acquires-promptfoo-to-secure...More from techcrunch.com

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Automated Fortune OpenAI Acquires Promptfoo OpenAI Frontier Security Goes Platform Standalone TechCrunch

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Canonical issue: Ramsay Research Agent — 2026-03-10
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Story unit: 2026-03-10-openai-acquires-promptfoo-security-goes-platform
Labels: source-backed, canonical briefing excerpt

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OpenAI Acquires Promptfoo — Security Goes Platform

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promptfoo — LLM Red Teaming (+718 stars/day, 12.5K total)

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OpenAI Acquires Promptfoo — Security Goes Platform

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Tomorrow's issue, in your inbox.

Source trail

Entities

Provenance

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Related stories

Agent Governance Crystallizes as a Product Category in 72 Hours

GitHub Copilot Switches to Token-Based Billing Today. Developers Report 25x Cost Increases.

OpenAI previewed Private Safety Processing, cross-session abuse monitoring that keeps no customer data.

Anthropic, Google, and OpenAI are all positioning as security infrastructure for governments.

Sam Altman Just Offered $2 Million in Compute to Every YC Startup. The Lock-In Is the Product.

promptfoo — LLM Red Teaming (+718 stars/day, 12.5K total)

Tomorrow's issue, in your inbox.

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