You Cannot Run ChatGPT Locally. You Can Run Its Cousins. The Distinction Is Everything.
This guide explains how to run open-weight AI models like Llama, Qwen, Mistral, and Gemma on a personal computer using software called Ollama or LM Studio. You cannot download and run the proprietary ChatGPT model locally, but compatible alternatives work offline once installed. The guide recommends 16GB of RAM as a starting point, with 32GB or more providing greater flexibility for larger models and multitasking.
This illustrates the critical distinction between proprietary and open-weight AI. Proprietary models live on someone else's servers. Open-weight models live on your machine, under your control, with no internet required. The mental model here is infrastructure independence. Understanding which AI capabilities you can own versus rent determines your privacy, your costs, and your vulnerability to service shutdowns.
The guide from scitechsociety.com covers consumer tools Ollama and LM Studio for running downloadable models including Llama, Qwen, Mistral, and Gemma on standard PCs.
- Download LM Studio from lmstudio.ai and install it on your computer. The interface will feel familiar if you have ever used an app store.
- Open the application and search for a small model like Llama 3.2 1B or Gemma 2 2B. These are lightweight enough to run on modest hardware. Click download and wait.
- Once downloaded, disconnect your computer from the internet entirely, then type a question into the chat interface. The model will respond offline, proving you now possess a functioning AI that depends on no server but your own.