# Thread AI funding: rounds and investors > Thread AI has raised $26M across 2 rounds since 2024. Investors include Index Ventures, Greycroft and Homebrew. Every round with its source. Source: https://millionrounds.com/company/thread-ai (Millionrounds; every figure on the page links to its filing or article) United States · [Series A startup](https://millionrounds.com/companies) # 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. AI Construction Follow Thread AI and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fthread-ai) Funding summary Updated 15 Nov 2026 **$26M** raised across 2 rounds since 2024, from 3 sources **$6.0M** Seed **$20M** Series A - **Latest round:** Series A, $20M Jun 2025 - **Step-up i:** 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 **$6.0M** Seed **$20M** Series A - **First round:** Seed, $6.0M - **Biggest round:** $20M - **Between rounds:** 8 months ## The rounds - **Jun 2025** Series A **$20M** *3 new* *3 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Plug and Play](https://millionrounds.com/fund/plug-and-play) [Index Ventures](https://millionrounds.com/fund/index-ventures) [Greycroft](https://millionrounds.com/fund/greycroft) [Scale Venture Partners](https://millionrounds.com/fund/scale-venture-partners) [Homebrew](https://millionrounds.com/fund/homebrew) Source recorded - **Oct 2024** Seed **$6.0M** *5 new* [Index Ventures](https://millionrounds.com/fund/index-ventures) Lead [Greycroft](https://millionrounds.com/fund/greycroft) [Homebrew](https://millionrounds.com/fund/homebrew) [Olivier Pomel](https://millionrounds.com/fund/olivier-pomel) [Dan Sturman](https://millionrounds.com/fund/dan-sturman) Reported by AlleyWatch and 1 other ## 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. **Seed** 2024 **Series A** 2025 [Index Ventures](https://millionrounds.com/fund/index-ventures) L [Greycroft](https://millionrounds.com/fund/greycroft) [Homebrew](https://millionrounds.com/fund/homebrew) [Y Combinator](https://millionrounds.com/fund/y-combinator) [Plug and Play](https://millionrounds.com/fund/plug-and-play) [Scale Venture Partners](https://millionrounds.com/fund/scale-venture-partners) [Olivier Pomel](https://millionrounds.com/fund/olivier-pomel) [Dan Sturman](https://millionrounds.com/fund/dan-sturman) ## Everyone who backed them [Index Ventures](https://millionrounds.com/fund/index-ventures) VC firm **2** rounds, led 1 [Greycroft](https://millionrounds.com/fund/greycroft) VC firm **2** rounds [Homebrew](https://millionrounds.com/fund/homebrew) VC firm **2** rounds [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round [Plug and Play](https://millionrounds.com/fund/plug-and-play) Accelerator **1** round [Scale Venture Partners](https://millionrounds.com/fund/scale-venture-partners) VC firm **1** round [Olivier Pomel](https://millionrounds.com/fund/olivier-pomel) VC firm **1** round [Dan Sturman](https://millionrounds.com/fund/dan-sturman) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=thread-ai). ## 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. ## Companies like Thread AI In the same sector, and raised in the last eighteen months. [**LangChain** $425M · Nov 2026](https://millionrounds.com/company/langchain)[**VuMedi** $142M · Nov 2026](https://millionrounds.com/company/vumedi)[**Betterness** $3.5M · Nov 2026](https://millionrounds.com/company/betterness)[**Axle** $12M · Nov 2026](https://millionrounds.com/company/axle)[**CrunchAtlas** $250K · Nov 2026](https://millionrounds.com/company/crunchatlas)[**Zus Health** $73M · Nov 2026](https://millionrounds.com/company/zus-health) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app