OpenAI Bets On AI Agent Security With Promptfoo Acquisition

OpenAI said it would integrate Promptfoo’s technology “directly into OpenAI Frontier, OpenAl’s platform for building and operating AI coworkers.”

ChatGPT maker OpenAI said Monday that it is acquiring Promptfoo, a company focused on helping developers and enterprises build secure AI applications.

Financial terms of the deal were not disclosed.

In a blog post, OpenAI said it would integrate Promptfoo’s technology “directly into OpenAI Frontier, OpenAl’s platform for building and operating AI coworkers.” OpenAI Frontier is OpenAI’s enterprise platform for building, deploying, and managing AI agents.

“As enterprises deploy AI coworkers into real workflows, evaluation, security, and compliance become foundational requirements,” the blog post stated. “Enterprises need systematic ways to test agent behavior, detect risks before deployment, and maintain clear records to support oversight, governance, and accountability over time.”

Promptfoo — based in San Mateo, California and backed by venture heavyweights Insight Partners and Andreessen Horowitz — has raised about $22 million in funding and has a valuation of about $119 million, according to PitchBook.

The startup was founded by Ian Webster, previously a senior staff software engineer at Discord, and Michael D’Angelo, who was previously VP of engineering at Smile Identity.

In a LinkedIn post on Monday, D’Angelo said that “I’m proud of what we’ve built and how quickly this team built it. We’re joining OpenAI to take this work much further. After the acquisition is completed, the Promptfoo team will continue building inside OpenAI Frontier, helping make evaluation, red teaming, and security review a built-in part of how teams ship AI agents. Promptfoo remains open source. We’ll continue maintaining the project, accepting contributions, supporting multiple providers and models, and serving customers.”

CRN has reached out to OpenAI for further details but did not hear back by press time.

OpenAI said the closing of the acquisition is subject to customary closing conditions.