Predictive text input is a technology that suggests words or phrases as you type, helping to speed up the writing process. It uses algorithms to analyze the letters you enter and predicts what you might want to say next, often based on common language patterns and your previous typing habits. This feature is commonly found in devices like smartphones and computers, where it can enhance communication efficiency. By utilizing machine learning techniques, predictive text can improve over time, becoming more accurate in its suggestions based on individual user behavior and preferences.