Building LLM Agent using Lightweight Model
1. Introduction Artificial Intelligence is shifting from passive, input-response systems toward entities capable of autonomous planning, reasoning, and action. This evolution is best understood through the lens of Reactive Agents versus Agentic AI. While both exhibit intelligent behavior, their underlying architectures and capabilities differ profoundly. In this article, we’ll break down these concepts with clear explanations and practical Python examples using a lightweight LLM. You’ll walk away knowing exactly how these systems differ—and, more importantly, how to build them. 2. Reactive Agent At its core, a Reactive Agent is a stateless intelligence. It doesn't "think" about the past or "plan" for the future; it simply lives in the now. The workflow is a straight line: Observe → React → Act. Observes the current situation Reacts immediately Produces a direct action Think of it as a software-de...