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