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Re:GPT-5.4 by catketch on Thursday March 05, 2026 @01:45PM (#47265542)
-codex variant models in earlier version were just fine tuned for coding work, and had a little better performance for related tool calling and maybe instruction calling.

in 5.4 it looks like the just collapsed that capability into the single frontier family model

Re:GPT-5.4 by akmarinov on Thursday March 05, 2026 @02:05PM (#47265812)
They’ll likely come out with a 5.4-Codex at some point, that’s what they did with 5 and 5.2
Re:GPT-5.4 by simianwords on Thursday March 05, 2026 @01:47PM (#47265568)
Yes so I’m even more confused. Why would I use codex?
Re:GPT-5.4 by joshuacc on Thursday March 05, 2026 @01:59PM (#47265736)
Presumably you don’t anymore if you have 5.4.
Re:GPT-5.4 by energy123 on Thursday March 05, 2026 @02:08PM (#47265852)
You choose gpt-5.4 in the /model picker inside the codex app/cli if you want.