The Best Free AI Code Editors for Windows: No Subscriptions

Run a free open source model on your own PC using Ollama or LM Studio. No internet needed after setup. No API bills. Ever. Works best with a decent GPU but lighter models run on CPU too.

Get a free OpenRouter API key and connect it to an open source coding tool like Roo Code or Continue. OpenRouter hosts dozens of free models with daily limits. Cloud quality at zero cost.

Tools like Gemini Code Assist and Trae give you real AI features for free with no setup. Just install and sign in. Usually backed by a company using free access as a growth strategy.

Gemini Code Assist is Google’s free AI coding extension for VS Code and JetBrains. You install it, sign in with a Google account, and you are up and running. No API key setup, no credit card, no trial period. It connects to Google’s Gemini models in the cloud and gives you code completions, inline chat, and multi-file context awareness immediately.

The free individual tier includes 6,000 code completions and 240 chat messages per day, which is enough for a full working day of development without hitting limits. The AI understands your entire workspace, not just the file you have open, so it can suggest code that fits your project’s actual patterns. One thing to know: on the free tier, Google uses your prompts and responses to improve their models. If you are working on private or commercial code, read their data policy before using it.

Trae is ByteDance’s free AI IDE for Windows, built as a VS Code fork. It comes with AI built in and does not require you to bring an API key or set up any external service. You download it, open it, and the AI is there. It uses Claude and other models via ByteDance’s backend and is completely free while in its current preview phase.

The standout feature is SOLO mode, which is a fully autonomous AI agent that takes a task description and builds an entire feature across multiple files without step-by-step direction. Builder mode is more interactive if you prefer to stay in control. Trae supports all VS Code extensions and themes so you keep your existing setup. The free access may change as the product matures, so it is worth using now while it lasts.

Roo Code is a free open source VS Code extension built for AI agent-powered coding. On its own it requires an API key and costs money to run. But paired with OpenRouter’s free model tier, it becomes a genuinely zero-cost setup. You sign up at OpenRouter, grab a free API key, paste it into Roo Code, and select one of the free models available such as DeepSeek or Llama. You get a daily allowance of requests that resets every 24 hours.

Roo Code’s real strength is its role-based execution system: Architect mode plans, Code mode builds, Debug mode fixes. You can switch modes mid-task so the AI is not writing code before it has figured out the right approach. It has over a million VS Code installs and an active community. For developers comfortable with a small amount of setup, this combo gives you Cursor-level agent capability at zero cost.

Ollama lets you download and run open source AI models directly on your Windows PC. Once a model is downloaded, it runs entirely offline with no internet connection, no API key, and no usage limits. You install Ollama, pull a model, and it serves a local server that coding tools like Twinny, Continue, and Roo Code can connect to.

For coding, the most useful free models to run locally are Qwen2.5+-Coder and DeepSeek-Coder-V2+, both of which punch well above their weight for code completion and chat. Qwen2.5-Coder 1.5B runs comfortably on a PC with 8GB of RAM and no GPU. The 7B version gives better results but needs a decent GPU. Once set up, your AI coding assistant costs nothing to run indefinitely.

Twinny is a free open source VS Code extension built specifically for local AI coding. It connects directly to Ollama or LM Studio running on your machine and gives you inline code completion and a chat panel, all without sending a single character of your code to an external server. It is open source, which means you can use it for any project including commercial work.

What makes it different from just connecting Continue to Ollama is that Twinny scans and indexes your entire repository locally, so its suggestions understand your codebase’s specific patterns and naming conventions. It also supports the Symmetry network, which lets you share compute with other machines on your local network if your main PC is not powerful enough. Simple, private, and completely free.

Continue is one of the most popular open source AI coding extensions, with support for VS Code and JetBrains. Like Roo Code, it needs an API key to do anything useful. Paired with OpenRouter’s free tier, it becomes a genuinely free setup. The main reason to choose Continue over Roo Code is flexibility: Continue lets you route chat to one model and autocomplete to a different model, so you can use a fast lightweight model for completions and a stronger model for complex questions.

It is highly configurable, supports over 40 different AI services and local model setups, and has a large community. If you later decide to switch from a free OpenRouter model to a local Ollama model, or to a paid provider for more power, you just change a config file. Nothing else changes in your workflow. Open source licensed and actively maintained.

LM Studio is a free Windows desktop app for downloading and running AI models locally. It has a clean GUI where you browse available models, download them with one click, and run them as a local server. Any coding tool that supports a local connection point, including Roo Code, Continue, and Twinny, can connect to LM Studio as their AI backend.

The main advantage over Ollama is the graphical interface. Ollama is command-line-first. LM Studio is point-and-click. You can test a model in its built-in chat window before wiring it up to your code editor, which helps you pick the right model for your hardware before committing. It supports all major open model formats and has a background server mode for running without a visible window. Free to use, not open source.

Refact.ai is a free AI coding extension with its own hosted models, meaning you do not need to bring an API key or set up a local server. The free personal plan gives you unlimited code completions powered by a capable open source coding model, plus an in-editor chat with a large reading window (how much code it can process at once). It works in VS Code and several other editors.

What makes it stand out is that Refact reads and indexes your entire project folder so its suggestions match your actual code patterns, not just the file you have open. It searches your codebase to find the most relevant context before generating each suggestion. For teams that need full privacy, Refact can also be self-hosted on your own server under its open source license. The free cloud tier has daily agent limits but completions are unlimited.

CodeGeeX is a free VS Code extension backed by a free open source coding model from Zhipu AI. It works out of the box with no API key and no account required. You install it and get code completion, inline chat, and code explanation right away. The model behind it was specifically trained on code, not adapted from a general language model.

It supports a large reading window (how much code it can process at once) and handles multi-language projects well, including translating code from one language to another. Three completion modes give you control over when suggestions appear: automatic on pause, manual trigger, or translation mode for porting code between languages. It is one of the few tools on this list that is completely no-setup and no-login.

Fitten Code is a completely free VS Code extension from Fitten Tech with no paid tier at all. You install it, create a free account, and get fast inline code completion and a chat panel. The completion engine is built for speed, targeting suggestions that appear in under 250 milliseconds so they do not break your typing flow.

Beyond completion, it generates unit tests automatically and writes inline documentation comments on request. It also handles cross-language code translation, useful if you need to port logic from Python to JavaScript or similar. It is closed source on the backend, so you do not get the transparency of an open source tool, but it is genuinely free with no usage wall in sight for individual developers.

Void is an open source VS Code fork, similar to Cursor in layout and features but completely free and privacy-focused. You connect it to your own API key or to a local Ollama model, and all processing goes directly from your machine to the model with no Void server in the middle. Your code never touches a third-party backend that is not under your control.

It has an Agent mode for autonomous multi-file edits and a Gather mode for read-only codebase exploration. The project is backed by Y Combinator (the startup accelerator behind Dropbox and Airbnb) and has an active GitHub community, though development pace is slower than commercial alternatives. If your concern is code privacy and you want a Cursor-like IDE without paying or trusting a company’s servers, Void is the honest answer.

PearAI is an open source VS Code fork also backed by Y Combinator that bundles several of the best free AI coding tools into a single editor interface. Under the hood it integrates Continue for chat, Aider for multi-file edits, and Perplexity for web search. You get all three working together in one download rather than setting each up separately.

It has a free tier that covers personal use, and the core product is open source licensed. The PearAI Router picks the best available model for each task automatically, so you do not have to think about which model to use for each task. Optional hosted plans exist for convenience but are not required. A good choice if you want a polished free IDE that brings several open source tools together cleanly.

Zed is a standalone code editor built for raw speed. It opened up Windows support and has a free tier that includes AI features. You can use it for free by connecting it to a local Ollama model, which gives you unlimited AI at zero cost. The built-in hosted quota is limited on the free plan, but Ollama integration removes that ceiling entirely.

The editor itself is noticeably faster than VS Code for large files and projects. Zed can run multiple AI agents at the same time working on different parts of the same codebase. If you value editor speed as much as AI capability, Zed is the only free option here that genuinely competes with VS Code on performance. Open source under the open source license.

Tabby is a self-hosted, open source code completion server. You run it on your own machine or a local server, and connect your VS Code or JetBrains editor to it via a plugin. Once running, it provides fast inline code completion with no external API calls and no usage limits. Everything stays on your hardware.

It is the most technical setup on this list, but the payoff is complete control over your code and data, with no external server involved, at zero cost. Tabby reads and organizes your repository before running the AI, which means even smaller local models produce more accurate completions than they would on raw text. Teams with a shared server can host one Tabby instance for multiple developers. The Community plan is permanently free and open source.