Large language models (LLMs) have become one of the most important technologies that have made a paradigm shift in the field of artificial intelligence, especially in the development of automated conversation systems. These models rely on massive training using huge amounts of text, which gives them a high ability to understand natural language and generate responses similar to the style of humans. Large language models are characterized by their ability to analyze the context and identify the intention of the user even if the sentence is incomplete or carries more than one meaning. This is what makes conversations smoother, reduces errors, and increases the accuracy of answers. These models are also able to summarize texts, translate them, and answer complex questions in a faster and more effective way. These technologies have also contributed to the development of multiple areas, such as customer service, education, and healthcare, as they can be integrated into interactive systems that operate around the clock and provide immediate support. In addition, it helps to improve the user experience through natural responses, following up the dialogue, and understanding the needs accurately