Evolution of AI: From LLMs as Basic Mimics to Advanced Agentic Systems, Highlighting the Transition from Simple Input-Output Models to Complex, Interactive Networks. In the early days of Generative AI hype, Large Language Models (LLMs) felt magical. You could type a question, and the machine would respond in coherent, human-like language. But very quickly, the world realized something: LLMs could talk , but they couldn’t do . This gap - between saying  and acting - set the s