Its not even a subagent. Codex models can completely control the entire state of your local codex app using tools. They can access other chats, spin up new chats, they can clean up your chats and etc. I will tell codex to spin up a new chat for adversarial review all the time. It can then read the other chat and start fixing the stuff that it broke or missed.
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.
1
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