I used to think this way. But I moved to AGENTS.md. Now I use the different UI as a mental context separation. Codex is working on Feature A, Gemini on feature B, Claude on Feature C. It has become a feature.
You're assuming that different models need the same stuff in AGENTS.md
In my experience, to get the best performance out of different models, they need slightly different prompting.
You're assuming that different models need the same stuff in AGENTS.md
In my experience, to get the best performance out of different models, they need slightly different prompting.