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acquisitionAnnounced · Mar 9, 2026AI securitySource · AdvertisementsArticle · 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.

OpenAI Strategic Acquisition of Promptfoo : Fortifying the Future of Secure AI Agents In a decisive move to address escalating security concerns in autonomous artificial intelligence, OpenAI announced on Monday, March 9, 2026, its acquisition of the cyber security startup Promptfoo

Deal timeline

Announced
Mar 9, 2026 · cryptorank.io
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: cryptorank.io · Primary article · FireStrike proprietary index