# Chen Sagi

> Chen Sagi builds software with agentic workflows, and writes about how it goes.

Personal site of Chen Sagi. Every content page has a markdown variant at the same URL with a `.md` suffix — those variants are linked below and are the preferred format for agents.

## Blog

- [I spent all of my tokens so you wouldn't have to: Fable's vision against Opus, Codex, and Gemini](https://blog.chensagi.com/blog/blind-ai-bug-bounty-benchmark.md): I pitted Claude Fable 5, Claude Opus 4.8, GPT-5.5 Codex, and Gemini 3.1 Pro against my iOS app in a blind, peer-judged bug hunt — then graded the judges against ground truth. The results surprised me twice.

## Apps

- [Finn](https://blog.chensagi.com/apps/finn.md): Finn doesn't teach you the stock market. It makes you feel it.
- [Smackintosh](https://blog.chensagi.com/apps/smackintosh.md): Slap your MacBook. It reacts.

## Pages

- [About](https://blog.chensagi.com/about): Bio and contact details for Chen Sagi
- [RSS feed](https://blog.chensagi.com/rss.xml): Full-content blog feed