Iris is a new AI-powered chat tool that allows users to switch between GPT-3.5 and GPT-4 models, even mid-conversation, with super-fast response times through natural gestures like swiping. With simple keyboard shortcuts like double tapping ⌥ to open/close Iris or pressing ⌥ + tab to sling, Iris makes it easy for users to navigate the app quickly and efficiently. Additionally, users can interject at any time without waiting for a complete response before speaking or sending new messages immediately using markdown code that displays bold text, bulleted lists, code syntax highlighting and more.