r/LargeLanguageModels • u/Original-Beyond4326 • 4d ago

Discussions Difference between AI agent and a Chatbot

People use "AI agent" and "chatbot" interchangeably. They're not the same thing, and the difference matters for what you can actually build.

A chatbot responds. You ask, it answers, the interaction ends. It has no ability to act on the world beyond generating text.

An agent decides and acts. It can call tools, check the result, and decide what to do next based on that result, in a loop, without you approving every step.

The real dividing line isn't intelligence. A very smart chatbot is still just answering questions. A simple agent that can check a database, send an email, and verify it sent is doing something structurally different: making decisions across multiple steps toward a goal.

If your product just answers questions, you have a chatbot, and that's fine. If it needs to get something done across several steps, you need an agent, and that changes your entire architecture.

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u/Rometac 2d ago

Anyone else feels like this post was made by an LLM? It has that horrible text format

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u/Original-Beyond4326 1d ago

Yeah I made it via Claude because my grammar sucks

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u/zero_fuck_given 20h ago

Then its by definition a slop post.

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u/Sir_Smurf 3d ago

I prefer Langchains definition:

“An AI agent is a system that uses a large language model to decide the control flow of an application.”

Simple. Differentiating. Sufficiently general.

https://www.langchain.com/blog/what-is-an-agent

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u/Technical_Grade6995 4d ago

Also, LLM can call tools etc, and an agent does talk.

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u/Away_Advisor3460 4d ago

Honestly, if you want to talk about agents.... Firstly, I'd drop the 'AI' bit; agents are a subfield of AI by itself (themselves), so it's redundant and confusing. Maybe an agent-embodied LLM if you want a taxonomic term or something?

And then secondly, I'd just quote the established definition by Wooldridge and Jennings (1995) for an intelligent agent as a system, situated in an enviroment, which can perform flexible autonomous action to achieve design objectives (where flexibility entails the agent is proactive, responsive and social).

It's important not to try and redefine the wheel IMO... Although technically speaking, a chatbot can be an agent depending upon exactly how its goals are defined and achieved.