AI Pair Programming in Your Terminal

Aider lets you pair program with LLMs to start a new project or build on your existing codebase.

Features

Cloud and local LLMs

Aider works best with Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini & GPT-4o, but can connect to almost any LLM, including local models.

Maps your codebase

Aider makes a map of your entire codebase, which helps it work well in larger projects.

100+ code languages

Aider works with most popular programming languages: python, javascript, rust, ruby, go, cpp, php, html, css, and dozens more.

Git integration

Aider automatically commits changes with sensible commit messages. Use familiar git tools to easily diff, manage and undo AI changes.

Use in your IDE

Use aider from within your favorite IDE or editor. Ask for changes by adding comments to your code and aider will get to work.

Images & web pages

Add images and web pages to the chat to provide visual context, screenshots, reference docs, etc.

Voice-to-code

Speak with aider about your code! Request new features, test cases or bug fixes using your voice and let aider implement the changes.

Linting & testing

Automatically lint and test your code every time aider makes changes. Aider can fix problems detected by your linters and test suites.

Copy/paste to web chat

Work with any LLM via its web chat interface. Aider streamlines copy/pasting code context and edits back and forth with a browser.

Getting Started

python -m pip install aider-install
aider-install

# Change directory into your codebase
cd /to/your/project

# DeepSeek
aider --model deepseek --api-key deepseek=<key>

# Claude 3.7 Sonnet
aider --model sonnet --api-key anthropic=<key>

# o3-mini
aider --model o3-mini --api-key openai=<key>

See the installation instructions and usage documentation for more details.

More Information

Documentation

• Installation Guide
• Usage Guide
• Tutorial Videos
• Connecting to LLMs
• Configuration Options
• Troubleshooting
• FAQ

Community & Resources

• LLM Leaderboards
• GitHub Repository
• Discord Community
• Blog

Kind Words From Users

• "The best free open source AI coding assistant." — IndyDevDan
• "The best AI coding assistant so far." — Matthew Berman
• "Aider ... has easily quadrupled my coding productivity." — SOLAR_FIELDS
• "It's a cool workflow... Aider's ergonomics are perfect for me." — qup
• "It's really like having your senior developer live right in your Git repo - truly amazing!" — rappster
• "What an amazing tool. It's incredible." — valyagolev
• "Aider is such an astounding thing!" — cgrothaus
• "It was WAY faster than I would be getting off the ground and making the first few working versions." — Daniel Feldman
• "THANK YOU for Aider! It really feels like a glimpse into the future of coding." — derwiki
• "It's just amazing. It is freeing me to do things I felt were out my comfort zone before." — Dougie
• "This project is stellar." — funkytaco
• "Amazing project, definitely the best AI coding assistant I've used." — joshuavial
• "I absolutely love using Aider ... It makes software development feel so much lighter as an experience." — principalideal0
• "I have been recovering from multiple shoulder surgeries ... and have used aider extensively. It has allowed me to continue productivity." — codeninja
• "I am an aider addict. I'm getting so much more work done, but in less time." — dandandan
• "After wasting $100 on tokens trying to find something better, I'm back to Aider. It blows everything else out of the water hands down, there's no competition whatsoever." — SystemSculpt
• "Aider is amazing, coupled with Sonnet 3.5 it's quite mind blowing." — Josh Dingus
• "Hands down, this is the best AI coding assistant tool so far." — IndyDevDan
• "[Aider] changed my daily coding workflows. It's mind-blowing how a single Python application can change your life." — maledorak
• "Best agent for actual dev work in existing codebases." — Nick Dobos