Aider
Git-native pair programming in your terminal, free forever
Our verdict
Excellent value for people who live in a shell — but there is no GUI, and your API bill is whatever you make it.
Aider edits your repository from the terminal and commits every change with a sensible message, using a repo map to keep context small and token bills low. The software is free and open source — you only pay your model provider.
How we scored it
What we liked
- ✓Completely free, no seats or credits
- ✓Every edit arrives as a reviewable git commit
- ✓Works with 100+ providers and local models
What to watch
- ✕Terminal only — no autocomplete or GUI
- ✕Release cadence has slowed in 2026
- ✕API spending is uncapped
Key features
- ◆Repo map
- ◆Architect mode
- ◆Automatic commits
- ◆Multi-file edits
- ◆Voice input
- ◆100+ model providers
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