Aider

What it does

Aider is an AI tool for coding from the terminal, explaining code and finding and fixing bugs. It is open source and free to use.

Aider is an AI pair programming tool that runs in the terminal and works directly on the files in your local git repository. You describe what you want in a chat, and Aider proposes and applies edits to the files you have added to the session. It builds a map of the whole codebase so it can handle larger projects, and it works with many popular programming languages. It can connect to almost any LLM, including hosted models from several providers and models running on your own machine, and it can also work through a browser-based chat interface by moving code in and out with copy and paste. Edits are committed to git automatically with commit messages, so you can diff, manage or undo them with the git tools you already use. Aider can watch your files so you can request changes by leaving comments in your editor, take images and web pages as visual context, accept spoken requests, and run your linters and tests after each change and try to fix what fails. It suits developers who are at home in a terminal or editor and already track work in git. Aider is installed locally and pointed at a model provider using API keys, or at a local model; the documentation covers installation, configuration, chat modes and provider connections.

• Terminal-based pair programming chat
• Codebase map for larger projects
• Connections to cloud and local LLMs
• Automatic git commits with messages
• Editor integration through code comments
• Voice-to-code requests
• Automatic linting and test runs
• Images and web pages as chat context

What you can do with it

Listing history

1. Nov 4, 2026Checked against aider.chat
2. Oct 4, 2026Listed