Why Are LLMs Considered the “Brain” of Modern AI Agents?

When people talk about AI Agents or Agentic AI, one question often comes up:

“What actually makes an AI agent intelligent?”

The short answer is: Large Language Models (LLMs).

LLMs are often called the “brain” of modern AI agents — and for good reason. Let’s understand why in simple terms:

Agentic AI Roadmap for Beginners: A Step-by-Step Guide

Artificial Intelligence (AI) is evolving fast, and one of the most exciting areas today is Agentic AI — systems that don’t just generate responses, but also plan, take actions, and use tools like a real assistant.
If you’re new to this space, the learning path can feel overwhelming. That’s why I’ve created a step-by-step roadmap that will help you go from zero to building Agentic AI applications.

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