August 20, 20262026-08-20
When I first started using AI, model quality was what mattered most. I compared which model wrote better code, read long documents more accurately, and reasoned more deeply. But once AI became part of my actual work and my usage grew, my attention shifted. Using AI well now matters as much as being able to keep using it sustainably.
April 19, 20262026-04-19
When you start designing or building an AI agent web service, one question shows up surprisingly early:
“If these agents are supposed to do real work, where does their coding ability actually come from?”
At first, it is tempting to think the answer is straightforward. Call a strong model API, add file editing, let it run shell commands, execute tests, and package the results. But once you look more closely, the problem expands fast.
April 12, 20262026-04-12
These days, a lot of people are saying good things about Codex. But the moment you try to actually use it, things get confusing.
Codex CLI?Codex App?Cursor?Codex model inside Cursor chat?Claude Code as a plugin?I had the same questions, so I went through the official documentation and organized what I found. I tried to write this in a way that even beginners, or people who do not usually work with coding tools, can follow comfortably.