Serafim Korablev net worth
Quick answer
Serafim Korablev's estimated net worth is $12.0M (range $8.4M – $18.0M) as of 2026. Serafim Korablev is CEO at 21st. 21st valuation.
Serafim Korablev is CEO at 21st (YC W26). Independent Entrepreneurial Check model estimate from public YC data.
At a glance
- Company status: Active
- Region: United States of America
- Industries: B2B, Engineering, Product and Design
- Team size: 3
- Website: https://21st.dev
Who is Serafim Korablev?
Serafim Korablev is a founder associated with YC W26.
About 21st
21st.dev is the largest React component registry for AI applications, used by 2M developers We provide the building blocks to create agent-powered apps: UI components, agent templates.
FAQ: Serafim Korablev net worth and 21st valuation
What is Serafim Korablev's net worth?
Serafim Korablev's estimated net worth is $12.0M (range $8.4M – $18.0M) as of 2026. Serafim Korablev is CEO at 21st. Entrepreneurial Check publishes an independent model-based estimate from public company and role data. Not verified net worth, and Entrepreneurial Check is not affiliated with Y Combinator or the profiled companies.
What is 21st valuation?
21st's estimated valuation on Entrepreneurial Check is $20.0M. That valuation, or a disclosed round when one is public, is the source for the paper-wealth estimate. Independent model output — not a verified appraisal or official mark.
What is Serafim Korablev's role?
Serafim Korablev is CEO at 21st, a Y Combinator-backed startup (batch W26).