You shipped something fast. It calls an LLM, parses the output, triggers an API, sends an email.

You called it an agent.

Your manager called it an agent.

The press release called it an agent.

But somewhere in the back of your mind, a question lingers.

*Is it actually?*

Here's the distinction:

An orchestration flow receives **instructions.** A real agent receives a **goal.**

In a workflow, you pre-decide the path. You're the architect. The model walks the hallway you built.

In a true agent loop, the model builds the hallway while walking it. It reasons. It picks tools. It backtracks. It adapts.

That's not a small naming difference. It's a completely different design philosophy — and it changes everything from line one.

This week's Level Up Engineer breaks it all down: