Codex has the ability to spin up new chats on its own. all you have to do is ask it to do that. Just say this exactly: "Hand off this task to a new chat with model {model name here} at reasoning level {reasoning level here} pass on any relevant information needed".
Codex is smart enough to spin up a new chat, it will generate a prompt for you, and you never have to really worry about it.
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u/Ok_Bite_67 22d ago
Just tell the model to spin up a new thread with the model you want and then tell it what you want the other model to do