OpenAI has introduced a new thinking‑time toggle for the ChatGPT‑5 model that lets Plus and Pro subscribers choose how long the system spends reasoning on a response. The web‑only feature offers Standard and Extended modes for Plus users, while Pro users gain two additional options—Light for the quickest answers and Heavy for deeper reasoning. The toggle appears in the chat window when the Thinking model is selected, but it is not yet available on iOS or Android apps. OpenAI says the control will roll out to mobile in coming weeks.
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