Independent client mod
I modded Codex to auto-route to the right-sized model.
I use the native client constantly. Switching models is cumbersome, so I modded it.
Why
Why doesn’t the ChatGPT client auto-route?
Inspired by Bullet (opens in a new tab), I used the same classifier → model pattern.
Simple word-based rules help too: terms such as design or architecture bump a request up a model.
Rather than share a binary, I’m sharing the prompt so you can mod a disposable copy of your own client.
Demo
Auto-routing in the native client.
Build it
Mod your own client.
Paste the full prompt into a fresh Codex task using Sol at xhigh, or Ultra.
Independent experiment. It builds a separately named, disposable copy and leaves the installed app untouched.