United States · 
Who invested in Castari?
Castari's investors include Y Combinator and Pioneer Fund.
United States · Pre-seed startup
Who invested in Castari
Funding summaryUpdated 26 Oct 2026
$500Kraised across 1 round since 2025, from 1 source
- Latest round
- Pre-seed, $500KDec 2025
- Investors
- 2
The rounds
- Dec 2025
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists Castari 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 Castari
How much has Castari raised?
Castari has raised $500K across 1 round since 2025.
When did Castari last raise?
Castari's most recent round was a Pre-seed of $500K in Dec 2025.
What was Castari's biggest round?
Its most recent round, $500K in Dec 2025, is also its largest on record.
Who backed Castari first?
Castari's first round on record, in Dec 2025, was backed by Y Combinator and Pioneer Fund.
What stage is Castari at?
Castari's latest named round is a Pre-seed, in Dec 2025.
Where is Castari based?
Castari is based in the United States.
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