K-Culture GlossaryㅊWords you meet while using AI
Chatbot
An AI service you use through a chat window. ChatGPT, Claude, and Gemini are all LLMs wrapped in a chat interface.
In plain words
A chatbot is a general term for a program you talk to by typing messages. It used to mean the rigid, scripted auto-reply bots on customer service sites, but today when news talks about "chatbots," it almost always means conversational AI built on large language models — ChatGPT, Claude, Gemini.
Understanding the structure makes the news easier to follow. The chatbot is the "product," and the language model inside it is the "engine." It's like the relationship between a car (ChatGPT) and its engine (GPT-5). A headline like "ChatGPT gets a new model" means the car stayed the same but the engine was swapped.
The same engine can also show up in different cars. A Claude model might run inside another company's app, or a single chatbot might let you choose between several different engines. Learning to tell apart "which service is this" from "which model is this" is the basic skill for reading AI news.
How it shows up in the news
"ChatGPT remains the No. 1 chatbot by users in Korea" — this is a ranking at the service (product) level, which moves independently of model performance rankings.
Try it yourself
- Ask the same question to two or more of ChatGPT, Claude, and Gemini: "Recommend three breakfasts I can make in 10 minutes."
- Notice how the tone, format, and content of the answers differ — even though they're all "chatbots," the model and instructions (system prompt) behind each one are different.
- This "same question, side by side" comparison is the most reliable way to pick the right chatbot for your needs. Your own hands-on experience beats any ranking in an article.
Chatbot vs. AI Agent: What's the Difference
Does it just answer?, Does it finish the task?
Nowadays agents often run inside a chatbot-style window, so you can't tell them apart by looks. The interface looks the same; what differs is how much happens after a single request. A chatbot gives an answer and stops, while an agent decides the next steps on its own and carries them through to the end.
| Aspect | Chatbot | AI Agent |
|---|---|---|
| When you give it one instruction | It gives a single answer and stops | It strings together multiple steps on its own until the task is done |
| Who decides the next step | A human has to ask again to continue | The AI plans and retries on its own |
| Does it touch the outside world | Usually just replies in words | It searches, creates files, even makes bookings |
| When it fails | It gives a wrong answer, and the person notices right away | It carries out the task while wrong, which is why permissions and confirmation steps are needed |
| Analogy | A help desk agent who answers whatever you ask | A proxy who takes on a task and gets it done |
Rule of thumbIf you have to decide what happens next every single time, it's a chatbot; if the AI decides and acts on its own, it's an agent.
See also
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