@Fenng: When a simple bug won’t go away with Codex, check the model—if it’s GPT-5.4, start a fresh session and switch to GPT-5.3-Codex; the fix may come instantly. You’re welcome.
Summary
Fenng advises swapping from GPT-5.4 to GPT-5.3-Codex when a straightforward bug keeps eluding resolution, hinting that model choice can sway debugging success.
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Cached at: 04/22/26, 05:01 PM
When you’re stuck chasing a “simple” bug with Codex and it just won’t die, check which model you’re on—if it’s GPT-5.4, start a fresh session and switch to GPT-5.3-Codex. You’ll probably nail it in minutes. You’re welcome.
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