python -m pip install aider-install
aider-install
# Change directory into your code base
cd /to/your/project
# Work with DeepSeek via DeepSeek's API
aider --model deepseek --api-key deepseek=your-key-goes-here
# Work with Claude 3.5 Sonnet via Anthropic's API
aider --model sonnet --api-key anthropic=your-key-goes-here
# Work with GPT-4o via OpenAI's API
aider --model gpt-4o --api-key openai=your-key-goes-here
# Work with Sonnet via OpenRouter's API
aider --model openrouter/anthropic/claude-3.5-sonnet --api-key openrouter=your-key-goes-here
# Work with DeepSeek via OpenRouter's API
aider --model openrouter/deepseek/deepseek-chat --api-key openrouter=your-key-goes-here
See the
installation instructions
usage documentation
for more details.
     Features
      
Add new features or test cases.
      
Describe a bug.
      
Paste in an error message or GitHub issue URL.
      
Refactor code.
      
Update docs.
  
Aider will edit your files to complete your request.
  
Aider automatically git commits changes with a sensible commit message.
  
Use aider inside your favorite editor or IDE.
  
Aider works with most popular languages: python, javascript, typescript, php, html, css, and more…
  
Aider can edit multiple files at once for complex requests.
  
Aider uses a map of your entire git repo, which helps it work well in larger codebases.
  
Edit files in your editor or IDE while chatting with aider,
and it will always use the latest version.
Pair program with AI.
  
Add images to the chat (GPT-4o, Claude 3.5 Sonnet, etc).
  
Add URLs to the chat and aider will read their content.
  
Code with your voice.
  
Aider works best with Claude 3.5 Sonnet, DeepSeek V3, o1 & GPT-4o and can connect to almost any LLM.
Aider has one of the top scores on SWE Bench.
SWE Bench is a challenging software engineering benchmark where aider
solved real GitHub issues from popular open source
projects like django, scikitlearn, matplotlib, etc.
     More info
  
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