United States · 
Who invested in Prometheus?
Prometheus's investors include Goldman Sachs, ARCH Venture Partners, BlackRock, JP Morgan and DST Global, and 3 more on record.
United States · Series B startup
Who invested in Prometheus
One round we have observed, with the 8 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 5 months agoValuation: $1.5B, Mar 2026Y Combinator: W19
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Funding summaryUpdated 5 Nov 2026
$12Braised across 1 round since 2026, from 2 sources
- Latest round
- Series B, $12BJun 2026
- Investors
- 8
The rounds
- Jun 2026Series B$12B
Reported by TechCrunch and 1 otherSEC filing: $2.7M sold
Everyone who backed them
Jeff BezosAngel1round
AWSVC firm1round
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Also claim to have backed them
This firm lists Prometheus as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Prometheus
How much has Prometheus raised?
Prometheus has raised $12B across 1 round since 2026.
When did Prometheus last raise?
Prometheus's most recent round was a Series B of $12B in Jun 2026.
What was Prometheus's biggest round?
Its most recent round, $12B in Jun 2026, is also its largest on record.
Who backed Prometheus first?
Prometheus's first round on record, in Jun 2026, was backed by Goldman Sachs, ARCH Venture Partners and BlackRock and 5 others.
What stage is Prometheus at?
Prometheus's latest named round is a Series B, in Jun 2026.
Where is Prometheus based?
Prometheus is based in the United States.
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