ChatGPT 5.4 Pro Standard Mode - Adaptive Thinking or Nerfing Model?

Genuinely thanks for the help but as I said, this is Systemic and is NOT Codex. I don’t use Codex at all, and is completely unrelated. Everything you stated in this last reply yes applies to “coding agents” or things one can run locally and have a bit of more control.

This is fine and just shows where we are at today in the AI/LLM space, for folks that equate them is not the same thing, they might share some core pieces but are totally different.

You are the total opposite of a user like me, you either pay for OpenAI API to use Codex and all you said is valid or you pay ChatGPT and Oauth to Codex and don’t use ChatGPT at all, so cannot and will not see the change that was made on April 18th.