I found a hidden ChatGPT setting that changes how hard the AI thinks (www.techradar.com)

A recently discovered feature in the iPhone ChatGPT app allows users to customize the AI's response time and depth of thought by selecting from three intelligence settings: High, Medium, and Instant. This feature works by adjusting how long ChatGPT-5.5 "thinks" before generating a response, giving users more control over the quality and speed of the answers they receive. To access this hidden functionality, users simply long-press the send button after typing a prompt, but it remains exclusive to paid subscribers and has not been prominently documented, meaning many users may still be unaware of its existence. For the AI/ML community, this development highlights the ongoing effort to enhance user experience and tailor interactions with AI models. The ability to choose the response type can significantly affect applications ranging from casual queries to more complex problem-solving. Although users on the Android platform have a similar option when long-pressing on the answer text, the feature's exclusivity on iOS raises questions about uniformity in user access across devices. Overall, this customization feature represents a step towards more interactive and adaptive use of AI technology, illustrating the potential for further refinements in how AI models engage with users.