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A model that stays on this PC
A local model runs entirely on your computer. The model files sit in a folder you can see. When you type a question, your processor does the work. Nothing leaves your machine. No internet connection required. The model reads what you give it and produces text based on patterns it learned during training.
What it is not: a local model is not connected to your private documents unless you explicitly feed them in. It does not automatically know what files you have. It cannot read your email, your spreadsheets, or your notes just because they exist on the same computer. The model has no awareness of your file system. You must deliberately provide text for it to read.
Files remain the master copy of your information. A model produces text that might be useful, might be wrong, might be confidently incorrect. Your documents, your databases, your carefully maintained records hold the truth. The model is a tool that generates text. It does not replace your filing system or your memory or your notes.
Before you ask a model anything, search your own computer. Use Field Lattice, the house search. It looks through the lessons and desks saved on this PC. It does not read your email, your bank files, or a folder you never placed in the house. A hit is a page you can open and check.
A local model belongs on a desk machine when you have work that benefits from text generation and you have the processing power to spare. Desktop processors handle the load better than laptop chips. Desktops stay plugged in. You can run a model for an hour without watching a battery meter drop. Laptops work for quick questions, but extended sessions drain power fast. If you find yourself checking battery percentage while waiting for a response, you are on the wrong machine.
The difference between a confident wrong answer and a sourced note matters enormously. A model produces text with consistent tone and structure whether the content is accurate or fabricated. It will state false information with the same confidence it states true information. It has no internal doubt mechanism. A sourced note, by contrast, points to a document. Lattice gives you a file path. You can open that file and verify what it says. You can see the context. You can check the date you wrote it.
The local AI desk on this house is a human look up. A request there can record a fee, and nothing on that desk charges a card. This lesson is free. Before you ask a person to look something up, search the house.
Field Lattice serves as the house search. You type a term. Lattice searches the house pages on this PC and shows pages you can open. This happens first. Search your files before you ask a model to generate text about a topic your files might already cover.
Cloud services are optional. If you choose to use a cloud model, you make that choice explicitly. You name the service. You understand that your text leaves your computer, travels over the internet, gets processed on someone else's hardware, and a response comes back. This is different from a local model. Both have uses. The distinction matters. Cloud is not automatic. Cloud is not assumed. Cloud is a choice you state clearly.
No jailbreaks exist in this system. A jailbreak attempts to trick a model into ignoring its guidelines. This is not a game we play. The model has boundaries. Those boundaries stay in place. You work within them or you do not use the model.
No claim gets made that the model knows your private notes unless you provided them. This point deserves repetition because the misconception is common. People assume that because a model runs locally, it somehow absorbed their file system. It did not. The model knows what it was trained on, which is text from before its training cutoff. It knows what you paste into the prompt. It does not know anything else. Your grocery list, your journal, your work documents remain unknown to the model until you explicitly include them in your query.
When you run a model locally, you control the hardware, the files, the prompts, and the outputs. You also control what the model never sees. Your private information stays private by default. The model is a text generator, not a mind reader, not a file system scanner, not an automatic organizer of your digital life. It is a tool that produces text based on patterns. You provide the input. You evaluate the output. Your files remain the authoritative source.
Extra cuts
The other answers in the same pass kept circling one warning: a smooth paragraph can be wrong. If the model names a file, a price, or a law, open the file or the official page yourself. The model does not get the last word.
A short question can sit on a laptop. A long run belongs on a desk machine that stays plugged in. If you are watching the battery, stop the run.
A local model pass
Novelmate Studio on this PC wrote a further pass. Write the question down first. Ask the model that stays on this computer. Read the answer. Open the house lesson that should know the fact and compare. If the answer sounds sure and the lesson does not say it, the lesson wins until you find the fact yourself.