A multi-modal user interface is described that hides response latency delays. A graphical user interface (GUI) supports different user input modalities including low delay inputs which respond to user inputs without significant delay, and high latency inputs which have a significant response latency after receiving a user input before providing a corresponding completed response. The GUI accepts user inputs in a sequence of mixed input modalities independently of response latencies without waiting for responses to high latency inputs, and responds to each user input in the sequence as if each preceding user input in the sequence had been performed without response latencies.