# Sphinx funding: rounds and investors > Sphinx has raised $19M across 4 rounds since 2024. Investors include Y Combinator, Rebel Fund and SBXi Fund. Every round with its source. Source: https://millionrounds.com/company/sphinx (Millionrounds; every figure on the page links to its filing or article) United States · [Seed startup](https://millionrounds.com/companies) # Who invested in *Sphinx* 4 rounds we have observed, with the 10 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 Financial Services Raised 9 months ago Follow Sphinx and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fsphinx) Funding summary Updated 5 Nov 2026 **$19M** raised across 4 rounds since 2024, from 4 sources **$500K** Seed **$2.0M** Pre-seed **$9.5M** Seed **$7.1M** Seed - **Latest round:** Seed, $7.1M Feb 2026 - **Biggest round:** $9.5M Seed · Sept 2025 - **Investors:** 10 (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 2026 **$500K** Seed **$2.0M** Pre-seed **$9.5M** Seed **$7.1M** Seed - **First round:** Seed, $500K - **Biggest round:** $9.5M - **Usual gap between rounds:** 5 months ## The rounds - **Feb 2026** Seed **$7.1M** *1 new* *3 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Rebel Fund](https://millionrounds.com/fund/rebel-fund) [Cherry Ventures](https://millionrounds.com/fund/cherry-ventures) [SBXi Fund](https://millionrounds.com/fund/sbxi) Source recorded - **Sept 2025** Seed **$9.5M** *4 new* [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) Lead [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) [BoxGroup](https://millionrounds.com/fund/boxgroup) [K5 Global](https://millionrounds.com/fund/k5-global) Reported by AlleyWatch SEC filing: $200K sold, first sale Jul 2025 - **Jun 2025** Pre-seed **$2.0M** *2 new* [Founders Fund](https://millionrounds.com/fund/founders-fund) [Blockchain Founders Fund](https://millionrounds.com/fund/blockchain-founders-fund) Source recorded SEC filing: $200K sold, first sale Jul 2025 - **Dec 2024** Seed **$500K** *3 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Rebel Fund](https://millionrounds.com/fund/rebel-fund) [SBXi Fund](https://millionrounds.com/fund/sbxi) Source recorded ## 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 **Pre-seed** 2025 **Seed** 2025 **Seed** 2026 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Rebel Fund](https://millionrounds.com/fund/rebel-fund) [SBXi Fund](https://millionrounds.com/fund/sbxi) [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) L [Founders Fund](https://millionrounds.com/fund/founders-fund) [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) [BoxGroup](https://millionrounds.com/fund/boxgroup) [K5 Global](https://millionrounds.com/fund/k5-global) [Cherry Ventures](https://millionrounds.com/fund/cherry-ventures) [Blockchain Founders Fund](https://millionrounds.com/fund/blockchain-founders-fund) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Rebel Fund](https://millionrounds.com/fund/rebel-fund) VC firm **2** rounds [SBXi Fund](https://millionrounds.com/fund/sbxi) VC firm **2** rounds [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) VC firm **1** round, led 1 [Founders Fund](https://millionrounds.com/fund/founders-fund) VC firm **1** round [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) VC firm **1** round [BoxGroup](https://millionrounds.com/fund/boxgroup) VC firm **1** round [K5 Global](https://millionrounds.com/fund/k5-global) Private equity **1** round [Cherry Ventures](https://millionrounds.com/fund/cherry-ventures) VC firm **1** round [Blockchain Founders Fund](https://millionrounds.com/fund/blockchain-founders-fund) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=sphinx). ## Quick answers about Sphinx ### Who invested in Sphinx? Sphinx's investors include Y Combinator, Rebel Fund, SBXi Fund, Lightspeed Venture Partners and Founders Fund, and 5 more on record. ### How much has Sphinx raised? Sphinx has raised $19M across 4 rounds since 2024. ### When did Sphinx last raise? Sphinx's most recent round was a Seed of $7.1M in Feb 2026. ### What was Sphinx's biggest round? Sphinx's largest round on record is $9.5M (Seed), in Sept 2025, led by Lightspeed Venture Partners. ### Who backed Sphinx first? Sphinx's first round on record, in Dec 2024, was backed by Y Combinator, Rebel Fund and SBXi Fund. ### What stage is Sphinx at? Sphinx's latest named round is a Seed, in Feb 2026. ### Where is Sphinx based? Sphinx is based in the United States. ### Who led Sphinx's rounds? Lightspeed Venture Partners led the Seed in 2025. ## Companies like Sphinx In the same sector, and raised in the last eighteen months. [**Journify** $12M · Nov 2026](https://millionrounds.com/company/journify)[**Nooks** $543M · Nov 2026](https://millionrounds.com/company/nooks)[**Laza Medical** $160M · Nov 2026](https://millionrounds.com/company/laza-medical)[**e2e** $8.0M · Nov 2026](https://millionrounds.com/company/e2e)[**Agrani Labs** $123M · Nov 2026](https://millionrounds.com/company/agrani-labs)[**Applied Compute** $580M · Nov 2026](https://millionrounds.com/company/applied-compute) ## 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