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Aider

A command line tool that lets you pair your program with GPT-3.5/GPT-4, to edit code stored in your local git repository

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Pricing

The tool is free and open source. You pay for the AI model you use.

Overview

Aider is a free, open-source tool you run in the terminal. Describe what you want and it edits your local git project using an AI model.

It can look through the project, edit files, and make a git commit you can undo. It works with cloud models and with models you run yourself.

Key features

  • Describe what you want and Aider edits the project
  • Works from the terminal on a local git project
  • Makes git commits you can undo
  • Works with many languages and common AI models, including local ones
  • Can run lint or tests after each change

Use cases

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Last updated 2026-08-29