Aider
Open-source pair programming in your terminal with git commits.
Overview
Aider edits files in your local repository from the command line, commits each change with a sensible message, and works with whichever model key you supply.
Teams reach for Aider when open-source pair programming in your terminal with git commits. It sits in the free bracket (Free and open source · you pay model costs) and is reviewed by AIAtlas editors against the tasks people actually bring to it, not marketing claims.
Best for
Where this tool consistently outperforms alternatives.
- Developers
- Open source maintainers
- Startups
Pricing
Indicative plans — always confirm on the official site.
Free
$0
Everyday use with fair limits.
- Core features
- Community support
- Usage caps
Paid
Popularyou pay model costs
For individuals and small teams shipping daily.
- Highest-quality models
- Priority speed
- Full history and exports
Enterprise
Custom
Security, control and volume pricing.
- SSO and audit logs
- Data residency options
- Dedicated support
Pros & cons
Pros
- Free and fully open source
- Excellent git hygiene
- Model-agnostic
Cons
- Terminal-only workflow
- You pay API usage separately
Key features
What you actually get day to day.
Automatic git commit per change
Repository map for context
Bring your own model API key
Voice and script-friendly CLI
Alternatives
Four similar tools worth comparing before you commit.
Frequently asked questions
Ready to try this AI?
Start with Aider on the official site — Free and open source · you pay model costs.