Aider lets you pair program with LLMs to start a new project or build on your existing codebase.
- 🧠 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.
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.
- Installation Guide
- Usage Guide
- Tutorial Videos
- Connecting to LLMs
- Configuration Options
- Troubleshooting
- FAQ
- "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