Who invested in Thread AI?
Thread AI's investors include Index Ventures, Greycroft, Homebrew, Y Combinator and Plug and Play, and 3 more on record.

United States · Series A startup
2 rounds we have observed, with the 8 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
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Funding summaryUpdated 15 Nov 2026
$26Mraised across 2 rounds since 2024, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Source recorded
Reported by AlleyWatch and 1 other
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Thread AI's investors include Index Ventures, Greycroft, Homebrew, Y Combinator and Plug and Play, and 3 more on record.
Thread AI has raised $26M across 2 rounds since 2024.
Thread AI's most recent round was a Series A of $20M in Jun 2025.
Its most recent round, $20M in Jun 2025, is also its largest on record.
Thread AI's first round on record, in Oct 2024, was backed by Index Ventures, Greycroft and Homebrew and 2 others.
Thread AI's latest named round is a Series A, in Jun 2025.
Thread AI is based in the United States.
Index Ventures led the Seed in 2024.
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