About Aider
Aider is an open-source AI pair programming tool that runs in your terminal. You work on a project with an LLM in a chat, and Aider edits the files and commits the changes to git.
What it does
Aider builds a map of your codebase so it can work across larger projects. It edits files, lints and tests each change, and commits with a clear message, so you can use normal git tools to review or undo the AI's work. You can add images and web pages as context, and you can give requests by voice.
Key features
- Maps the whole codebase for larger projects
- Commits each change with a sensible git message
- Works with most popular programming languages
- Runs your linters and tests after each change
- Adds images and web pages as context
Who it's for
Developers who like working in the terminal and want a transparent tool that keeps every AI change in git history. It suits both new projects and existing codebases.
Pricing and good to know
Aider is open source under the Apache 2.0 licence and is free to install. You pay the LLM provider you connect, such as Claude, OpenAI or DeepSeek, or you can run local models. It can also work through a browser chat by copy and paste, though the API route is the smoother option.
Highlights
- Maps the whole codebase for larger projects
- Commits each change with a sensible git message
- Works with most popular programming languages
- Runs your linters and tests after each change
- Adds images and web pages as context
