United States · 
Who invested in Promptfoo?
Promptfoo's investors include Andreessen Horowitz and Insight Partners.
United States · Series A startup
Who invested in Promptfoo
Funding summaryUpdated 26 Oct 2026
$18Mraised across 1 round since 2025, from 1 source
- Latest round
- Series A, $18MJul 2025
- Investors
- 2
The rounds
- Jul 2025Series A$18M
Source recordedSEC filing: $17M sold, first sale Jul 2025
Founders and team
From Promptfoo's own website: 2 founders.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Promptfoo
How much has Promptfoo raised?
Promptfoo has raised $18M across 1 round since 2025.
When did Promptfoo last raise?
Promptfoo's most recent round was a Series A of $18M in Jul 2025.
What was Promptfoo's biggest round?
Its most recent round, $18M in Jul 2025, is also its largest on record.
Who backed Promptfoo first?
Promptfoo's first round on record, in Jul 2025, was backed by Andreessen Horowitz and Insight Partners.
What stage is Promptfoo at?
Promptfoo's latest named round is a Series A, in Jul 2025.
Where is Promptfoo based?
Promptfoo is based in the United States.
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