The Ultimate Guide to Running Local LLMs on Windows in 2026

The era of relying exclusively on cloud-based AI providers is ending. As open-source models become incredibly capable, power users and professionals are moving their AI workloads on-premise.

Running a Local Large Language Model (LLM) on your Windows machine means zero subscription fees, offline availability, and—most importantly—absolute data privacy.

In this guide, we will show you how to set up a local AI environment using Ollama and connect it to a desktop interface like Wrivio.

Step 1: Install Ollama

Ollama is the easiest way to get up and running with local models. It acts as an engine that manages the complex technical details of loading and running AI weights.

1. Download the Windows installer from the official Ollama website.
2. Run the installer and follow the prompts.
3. Once installed, Ollama will run quietly in your system tray.

Step 2: Download a Model (Qwen 2.5)

To do anything useful, Ollama needs a model. For general text rewriting, email drafting, and coding assistance, Qwen 2.5 (3B or 7B parameters) is an exceptional choice. It is fast, accurate, and runs comfortably on most modern laptops.

Open your Windows Command Prompt or PowerShell and type:

ollama run qwen2.5:3b

Ollama will automatically download the model weights (this might take a few minutes depending on your internet connection). Once downloaded, it will start an interactive chat session. You can type /bye to exit.

Step 3: Connect to a Desktop Interface

While chatting in a terminal is cool, it isn’t practical for daily work. If you want to use your new local AI to write better emails without context switching, you need a UI that integrates into your workflow.

This is where Wrivio comes in.

Wrivio is a frictionless, private-first AI rewriter for Windows. It is designed to automatically detect your local Ollama installation.

1. Keep Ollama running in the background.
2. Press Ctrl+Shift+Space anywhere on your computer (Word, Outlook, VS Code).
3. The Wrivio overlay appears. Type or paste your text, and hit Ctrl+Enter.

Wrivio sends the request to localhost:11434 (your local Ollama server), and the AI streams the rewritten text back to your screen instantly.

Why Local AI Matters

By keeping the inference local, you completely eliminate the risk of cloud AI data leaks. Whether you are a developer writing proprietary code or a lawyer handling sensitive documents, local AI ensures your keystrokes never leave your machine.