How to Run AI on Your Own Computer for Free and Privately
Use open-source models offline with Ollama, LM Studio, Jan and GPT4All, and find out what hardware you need.
Most AI tools run on a company's servers, which means your text and files are sent over the internet. Running a model on your own computer keeps everything private, works offline and has no monthly limits. Thanks to open models and simple apps, it no longer requires programming skills.
What you need
A recent laptop or desktop with at least 16 GB of memory can run small and medium models comfortably. A graphics card with 8 GB or more of video memory, or an Apple Silicon Mac, makes answers much faster. Models are large downloads, typically between 2 and 20 GB, so check your free disk space.
The easiest option: LM Studio
LM Studio is a desktop app with a familiar chat interface. Search for a model inside the app, download it with one click and start chatting. It shows which models fit your hardware, which removes most of the guesswork.
Open-source alternatives
Jan is an open-source ChatGPT-style app that runs fully offline. GPT4All adds a private document feature: point it at a folder and ask questions about your files without uploading them.
For more control: Ollama
Ollama runs models from the command line with a single command and serves them to other apps on your computer. Many chat interfaces and coding tools can connect to Ollama, so it is a good foundation if you want to build your own setup.
Speech and images offline
Whisper transcribes audio locally in many languages. ComfyUI runs image and video models like Stable Diffusion and Flux, and Upscayl enlarges photos on your own machine.
Try before you download
Hugging Face Spaces hosts thousands of free online demos of open models. It is a good place to test a model's quality before committing to a large download.
Choosing a model
Smaller models with around 3 to 8 billion parameters are fast and handle everyday writing and questions. Larger models are smarter but need more memory. Start small, and only move to a larger model if the answers are not good enough for your task. Look for "quantized" versions, which use less memory with a small loss in quality.
Limits to expect
Local models are usually less capable than the best online assistants, especially for complex reasoning and up-to-date facts, because they do not search the web by default. For private notes, drafts, coding help and document questions, they are an excellent free option.
Tool names link to our page for each tool, where you can open the official site. Free plans change often; check the current limits before relying on a tool.