OpenAI enhances ChatGPT app with this hidden feature

OpenAI added a hidden gesture in the ChatGPT app that lets users instantly set prompt effort levels. The gesture involves swiping down on the chat input field with two fingers. This feature allows users to quickly adjust the model's effort without typing. ChatGPT now defaults to the GPT-4o model. The app also includes a new navigation method for longer conversations. This update improves user control over model behavior in real time.