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A clear public starting point.
This page gathers the company’s published description, taxonomy, status, and official link in one place. It does not make claims about private activity or deal terms.
Startup in Sahin’s portfolio

React UI component registry and infrastructure for building AI agents into products
As an angel investor in 234 startups across 14 categories, I look for companies with exceptional founders, large addressable markets, and clear competitive advantages. 21st stood out in the AI / ML space.
Company record
This page gathers the company’s published description, taxonomy, status, and official link in one place. It does not make claims about private activity or deal terms.