# 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

**Branch AI**  
Artificial Intelligence  
AI Overview Search, as a Service

### CodeStory

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

### Vizly

**Vizly**  
Artificial Intelligence  
Data to insights in seconds

### Watto AI

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