United States · 
Who invested in Alt-X?
Alt-X's investors include Y Combinator.
United States · Pre-seed startup
Who invested in Alt-X
Funding summaryUpdated 26 Oct 2026
$500Kraised across 1 round since 2025, from 1 source
- Latest round
- Pre-seed, $500KDec 2025
- Investors
- 1
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 Alt-X 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 Alt-X
How much has Alt-X raised?
Alt-X has raised $500K across 1 round since 2025.
When did Alt-X last raise?
Alt-X's most recent round was a Pre-seed of $500K in Dec 2025.
What was Alt-X's biggest round?
Its most recent round, $500K in Dec 2025, is also its largest on record.
Who backed Alt-X first?
Alt-X's first round on record, in Dec 2025, was backed by Y Combinator.
What stage is Alt-X at?
Alt-X's latest named round is a Pre-seed, in Dec 2025.
Where is Alt-X based?
Alt-X is based in the United States.
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