<ul><li>A chatbot is a software application designed to have textual or spoken conversations, using generative artificial intelligence systems that simulate human behavior.</li><li>Recent advancements in chatbots, such as OpenAI's ChatGPT, Microsoft's Copilot, and Google's Gemini, are based on large language models like GPT-4 and the Gemini language model.</li><li>Chatbots are widely used in customer service and support, as companies across various industries leverage advanced AI technologies for virtual assistants and customer interactions.</li><li>BERT, a language model popular in natural language processing, was pre-trained with tasks like Masked Language Model and Next Sentence Prediction to understand bidirectional context and relationships between sentences.</li></ul>

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