YC S23

4 dead or acquired startups from batch S23 with completed research reports.

Every startup playbook in our database, ready to build

Each deep-dive includes a post-mortem, step-by-step rebuild plan, and a technical spec you can paste straight into Claude Code, Cursor, or Lovable.

Branch AI
Artificial Intelligence
AI Overview Search, as a Service

CodeStory
Developer Tools
Aide is an AI-native, privacy-first IDE built on top of VSCode

Vizly
Artificial Intelligence
Data to insights in seconds

Watto AI
AI-powered McKinsey-quality reports in seconds.