Run AI on Your Own Computer: A Free, Private Alternative to ChatGPT

Did you know you can run a powerful AI chatbot on your own computer—for free and completely private? Here's what beginners need to know.

The basics: Most popular AI tools (like ChatGPT) send everything you type to a company's servers, and usually cost around $20 per month. But there's another option called "open-weight" models—AI programs where the company publishes all the files the AI learned from, so anyone can download and run them for free.

Two free programs make this possible:

• LM Studio – beginner-friendly, with a simple point-and-click design that can work fully offline.
• Ollama – aimed at more technical users who prefer typing commands.

Why would you want to do this?

• Privacy: Your conversations stay on your computer. (A court recently ordered one AI company to preserve user chat logs—even deleted ones.)
• Cost: No monthly subscription.
• Customization: You can tweak the AI to focus on specific tasks, like medicine.

What hardware do you need? AI models are measured in parameters (the internal numbers an AI learns during training—more parameters usually means a smarter but bigger model). To run them, the model must fit into your computer's VRAM (the memory on your graphics card) or a Mac's unified memory (shared memory used by the whole system).

Key numbers to know:

• 8GB of VRAM – the minimum for small models.
• 16GB+ of RAM – recommended for LM Studio.
• 24GB VRAM or more – ideal for serious users.
• Small AI downloads range from about 4.6GB to 20GB.

The catch: Free open models are still slightly behind the best paid ones. According to research firm Epoch AI, they trail the top "closed" (private, paid) models by about four months on average. The very biggest open models are too large for ordinary home computers.

Bottom line: For anyone who wants a free, private AI assistant and already owns a decent computer, running a local model is easier than it sounds—and a genuine alternative to paid subscriptions.

This is an AI-generated summary. Read the original article at: https://decrypt.co/382295/how-to-run-ai-model-locally-why-you-might-want