How much funding has Promptfoo raised?

Promptfoo has raised $23.4M in total. Its most recent round was a Series A in July 2025.

Who are Promptfoo's competitors?

Troj AI, Verax, and TestSavant are among the closest in AI Security. The full competitive set, with overlap scoring, is in the platform.

Promptfoo

AI SecuritySan Francisco, United Statesfounded 2024acquired by OpenAI

Promptfoo is a cybersecurity company specializing in AI Security, founded in 2024 and headquartered in San Francisco, United States. It has raised $23.4M in total funding, employs about 6 people, and was acquired by OpenAI in 2026.

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updated Aug 22, 2026

The record

What Promptfoo did, dated.

Mar 2026AcquiredOpenAI to acquire Promptfoo
Dec 2025PartnershipPromptfoo is now in the AWS Solutions Library
Oct 2025Product launchIntroducing Promptfoo++, a codeless platform for LLM
Jul 2025Funding roundPromptfoo Raises $18.4 Million Series A to Build Definitive AI Security Stack

selected events only — the full dated record (5 events since Jul 2025) lives in the platform

Momentum

51 out of 100.

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Products

What Promptfoo sells.

In the platform

The other 440 data points.

Funding historyevery round, every lead investor
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

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FAQ

Common questions about Promptfoo.

How much funding has Promptfoo raised?: Promptfoo has raised $23.4M in total. Its most recent round was a Series A in July 2025.
How many people work at Promptfoo?: About 6.
Who are Promptfoo's competitors?: Troj AI, Verax, and TestSavant are among the closest in AI Security. The full competitive set, with overlap scoring, is in the platform.