We’re retiring automatic switching fromInstanttoThinking(reasoning) for ChatGPT Plus and Pro users globally. You can still select an available option in the model picker to give ChatGPT more time to think or reason.We’re also removing theHigher intelligencesetting from ChatGPT on the web for these plans. ChatGPT can still switch automatically for safety purposes.For more information, see:GPT-5.6 and GPT-6 Pro in ChatGPT.