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acquisitionAnnounced · Mar 9, 2026AI securitySource · Community DiscussionsArticle · Factual
Promptfoo
OpenAI
Promptfoo · OpenAI

OpenAI acquires Promptfoo

David Najork
David Najork · Founding Software Engineer
Published · Updated · 1 min read
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Deal value
Target
Promptfoo
Promptfoo
Acquirer
OpenAI
OpenAI
Full Acquisition
Status
Announced

OpenAI agreed to acquire Promptfoo. Reported deal value: Undisclosed. Status: Announced. Sector: AI security. Target headquarters context: Location not specified.

This page summarizes publicly available information about the transaction as of 2026-03-09. Figures and status may change as filings and press coverage update.

View the LinkedIn Profile of Matthias Bastian Mar 9, 2026 OpenAI plans to acquire Promptfoo , a security platform that helps companies catch and fix vulnerabilities in AI applications during development

Deal timeline

Announced
Mar 9, 2026 · the-decoder.com
Additional milestones (proxy, vote, close) appear as filings and press updates are indexed.
Sector context

This transaction is classified in AI security. Figures and status may change as sources update.

Sources: the-decoder.com · Primary article · FireStrike proprietary index