What Is an AI Agent, Actually?
LangChain defines an AI agent as an LLM looping through decide, act, reason, repeat.
“That loop, decide, act, reason, repeat. That's what makes an agent.”
LangChain offers a basic definitional explainer on AI agents: an LLM with tool-calling ability that iterates through a decide-act-reason loop until a task is complete. This is foundational educational content with no new announcement or finding. Low newsletter value as it covers concepts already well-understood across the AI engineering community.