United States · Series A startup

Who invested in Thread AI

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.

AIConstruction

Funding summaryUpdated 15 Nov 2026

$26Mraised across 2 rounds since 2024, from 3 sources

$6.0MSeed$20MSeries A
Latest round
Series A, $20MJun 2025
Step-upi
3.3×
Investors
8 (1 led)
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2025
$6.0MSeed$20MSeries A
First round
Seed, $6.0M
Oct 2024
Biggest round
$20M
Series A · Jun 2025
Between rounds
8 months
from the last two

The rounds

  1. Jun 2025
  2. Oct 2024

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Everyone who backed them

Index VenturesVC firm2rounds, led 1
GreycroftVC firm2rounds
HomebrewVC firm2rounds
Y CombinatorAccelerator1round
Plug and PlayAccelerator1round
Olivier PomelVC firm1round
Dan SturmanVC firm1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about Thread AI

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.

How much has Thread AI raised?

Thread AI has raised $26M across 2 rounds since 2024.

When did Thread AI last raise?

Thread AI's most recent round was a Series A of $20M in Jun 2025.

What was Thread AI's biggest round?

Its most recent round, $20M in Jun 2025, is also its largest on record.

Who backed Thread AI first?

Thread AI's first round on record, in Oct 2024, was backed by Index Ventures, Greycroft and Homebrew and 2 others.

What stage is Thread AI at?

Thread AI's latest named round is a Series A, in Jun 2025.

Where is Thread AI based?

Thread AI is based in the United States.

Who led Thread AI's rounds?

Index Ventures led the Seed in 2024.

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