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Ian Webster
Founder

Ian Webster

Co-founder and CEO at Promptfoo

@iwebst

Co-founder and CEO of Promptfoo, an AI security platform being acquired by OpenAI to integrate into Frontier for agent security testing and evaluation.

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Michael D'AngeloFounder
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OpenAI integrates Promptfoo into Frontier to test agent behavior, detect vulnerabilities, and track compliance
OpenAIpositiveMar 10, 2026

“Co-founder and CEO of Promptfoo, an AI security platform being acquired by OpenAI to integrate into Frontier for agent security testing and evaluation.”

OpenAI acquiring Promptfoo
OpenAIpositiveMar 10, 2026

“Led Promptfoo, an AI security platform used by 25% of Fortune 500 companies, which was acquired by OpenAI.”