The Evolutionary tree of modern LLMs showcases the progression of language models from early models like ELIZA and PARRY to the latest Transformer-based models such as BERT, GPT series, and T5. These architectures have been trained on vast datasets like Common Crawl, Wikipedia, and BooksCorpus using methods like supervised learning, unsupervised learning, and reinforcement learning from human feedback. Modern LLMs have found applications in various fields such as natural language understanding, sentiment analysis, language translation, chatbots, and content creation.