Accelerator index

Startups with Ukrainian founders in Y Combinator

Companies in the Spilni directory with a verified Y Combinator profile.

7 companies. Inclusion here means Y Combinator funded the company; it does not imply that the company is headquartered in Silicon Valley.

Companies

Quo

Quo, formerly OpenPhone, is a San Francisco communications platform co-founded by Kyiv-born entrepreneur Daryna Kulya. It announced $105 million in growth financing in September 2025.

AI · Business communications · Growth financing · Hiring

EARTH AI

EARTH AI is an Australian-U.S. critical-minerals company founded by Ukrainian geologist Roman Teslyuk. It raised a $20 million Series B and announced multiple mineral discoveries in 2025.

AI · Critical minerals · Series B · Hiring

Infisical

Infisical is a San Francisco security-infrastructure company co-founded by Ukrainian entrepreneur Vlad Matsiiako. It raised a $16 million Series A in 2025 after becoming cash-flow positive.

Security · Developer infrastructure · Series A · Hiring

9 Mothers

9 Mothers is an Austin counter-drone startup with $1.6 million in reported sales and U.S. defense delivery experience. Co-founder Roman Khomenko has documented roots in Ukraine.

Defense · Counter-UAS · Venture · amount undisclosed · Hiring

Prox

Prox is a Ukrainian-founded AI support company backed in 2026 by Bloomberg Beta, Burst Capital, Weights & Biases, SV Angel, Paul Graham, and AI-company operators.

AI · Technical support · Early-stage · amount undisclosed · Hiring

AiSDR

AiSDR is an AI sales company founded by Ukrainian brothers Yuriy and Oleg Zaremba. The company reported 4× revenue growth and 214% customer growth in 2024.

AI · Sales · Seed · No public openings

Sparkles

Sparkles is a San Francisco developer-tools startup founded by Ukrainian entrepreneur Ai Daniil Bekirov. It raised $3.5 million and is hiring after launching in Y Combinator’s Winter 2026 batch.

AI · Developer tools · Stage undisclosed · Hiring

Updated August 8, 2026. Methodology · Data