Promptfoo

San Francisco, CA · Founded 2024 · Privately Held (backing)

Operator of an open-source large language model testing company intended to discover and eliminate major large language model risks. Promptfoo is based in San Francisco, CA and was founded in 2024. It was valued at $85.5 million at its early-stage round in Jul 2025, the last priced event on record. It has raised $22.7 million across 2 recorded rounds; the latest was a $17.5 million early-stage round in Jul 2025.

PMV mark · valuation
$85.5M
Oct 2026
Priced at
its early-stage round
Jul 2025
Total raised
$22.7M
Last round
Early Stage VC
Jul 2025
How much has Promptfoo raised?
$22.7Macross 2 recorded rounds · Jun 2024 – Jul 2025

Most recently, Promptfoo raised $17.5M in its Early Stage VC (Jul 2025).

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Promptfoo round by round

2 rounds
Jul 2025Early Stage VC$17.5MSEC filing▮
3 investors participated
Jun 2024Early Stage VC$5.2MSEC filing▮
7 investors participated

How much has Promptfoo raised?

Promptfoo has raised $22.7 million across 2 recorded rounds since 2024. The largest was a $5.2 million early-stage round in Jun 2024; the most recent was a $17.5 million early-stage round in Jul 2025.

Promptfoo has filed 2 Form Ds with the SEC since 2024, most recently in Jul 2025 ($17.5 million sold to 3 investors).

Promptfoo investors

8 investors are on record for Promptfoo, including Andreessen Horowitz, Insight Partners (New York), Uncorrelated Ventures and 515 Ventures. The early-stage round in Jul 2025 drew 3 investors.

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8 investors have backed Promptfoo.

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Frequently asked about Promptfoo

How much has Promptfoo raised?
Promptfoo has raised $22.7M in total across 2 recorded funding rounds.
When was Promptfoo's last funding round?
Promptfoo's most recent recorded round was Early Stage VC in Jul 2025, raising $17.5M.