Your First Chatbot on Your Own Computer

Most people first meet AI through a website like ChatGPT. That works well, but it can also make AI feel like something that only exists inside someone else’s service.

In this post we are going to try something different: running a small chatbot on your own computer.

A few years ago, that would have sounded like a project for specialists. Today it is becoming much more approachable. The AI systems behind chatbots have become easier to download and run on ordinary computers, and they are getting better quickly.

There are a few reasons you might want to do this. You may like the idea of typing into a chatbot without sending every message to a website. You may want something that does not depend on a subscription or a company changing the rules later. Or you may simply be curious about what your own computer can do.

You do not need to understand programming, AI, or computer hardware to try this. We are going to use a tool called Ollama, which handles the complicated parts for us.

What Ollama Does

Ollama is an app that downloads AI models and runs them on your computer.

A model is the part that generates the replies. Ollama is the program that manages the model and gives you a simple way to talk to it.

Models come in different sizes. A small model takes less space and asks less of your computer while it is running. Larger models may give better answers, but they can also be slower and less practical on an ordinary laptop or desktop. For a first try, the goal is not to find the best possible model. The goal is to get one running and have a conversation with it.

Ollama is not a complete ChatGPT-style web app. It gives you the model runner and a simple terminal chat. That is enough for this first experiment. Later, if you want a browser interface with chat history, model selection, and a more familiar chat layout, you can add another tool on top of it. A common choice is Open WebUI.

Install Ollama

Go to the Ollama download page and install the version for your computer.

If you are on Windows or macOS, this should feel like installing a normal app.

If you are on Linux, the download page gives you a line of text to copy into the terminal. That looks more technical than it is: copy it, paste it, press Enter, and let it finish.

Open the Terminal

The terminal is not coding. It is just a plain text window where you can give your computer a direct instruction.

It can look serious at first because there are no buttons. For this guide, you do not need to remember commands or understand every symbol. You are going to paste one short line.

To open it:

• On macOS, press Command + Space, type Terminal, and press Enter.
• On Windows, open the Start menu, type Terminal, and open it. If you do not see Terminal, open PowerShell.
• On Linux, look for Terminal in your applications menu.

Start the Chatbot

Once Ollama is installed, paste this into the terminal and press Enter:

ollama run llama3.2

That line is a command. It tells Ollama to run Llama 3.2, a small model you can chat with.

We are starting with Llama 3.2 because it is small enough to be a sensible first test, but still useful enough to have a real conversation with. It is not the only good choice; it is just a good place to begin.

The first time you run it, Ollama will need to download the model. That can take a few minutes. This is normal.

When it is ready, the terminal will turn into a chat window. You can type a message, press Enter, and wait for the reply.

Try It Offline

If you want to see what makes this different from a chatbot website, disconnect from Wi-Fi after the model is running. Then ask it a simple question. It should still answer, because the model is already stored on your computer and Ollama is running it there.

When you are finished, type:

/bye

You can also close the terminal window.

What to Expect

The first reply may take a little while. Smaller or older computers may answer more slowly. That does not mean you did anything wrong.

After the first download, you can come back any time by opening the terminal and typing:

ollama run llama3.2

This time it should start faster, because the model is already on your computer. You only need the internet again if you want to download another model or use another tool that connects to an online service.

A Careful Note About Privacy

With a local chatbot, the conversation itself is handled on your own computer. That is different from typing into a chatbot website, where your message has to be sent to someone else’s servers so the service can reply.

That does not make the entire setup magically private. Ollama needs the internet to download the chatbot the first time. Other apps you connect later could have their own privacy rules. And anything saved on your computer is only as private as your computer itself.

For a first experiment, though, this is enough: you have now run a chatbot from your own machine.

Where to Go Next

If this worked and you want to explore a little more, the Llama 3.2 page shows the model we used in this post. Ollama also has a larger library of other models you can try. The library is mostly a catalogue, so do not worry if it looks like a wall of names at first. Start small, try one thing at a time, and see how it feels on your computer.

Another useful next step is to give Ollama a browser-based interface. Open WebUI can connect to Ollama and make the setup feel more like a regular chatbot website, while Ollama still handles the model underneath. I will cover that in a separate post.

• Llama 3.2 on Ollama
• Ollama model library