Key features of artificial intelligence chatbots include natural language processing (NLP), machine learning capabilities, and contextual understanding. NLP allows chatbots to interpret and respond to human language, facilitating interactive conversations. Machine learning enhances their ability to improve responses over time based on user interactions and data analysis. Additionally, these chatbots often possess 24/7 availability, providing instant support and information to users. They can also integrate with various platforms, including websites and messaging applications, streamlining customer interactions and enhancing overall service efficiency for businesses.