Claude Code
Hard, multi-step coding work in the terminal when you want the highest benchmark scores.
verified 2026-11-02
Coding agents & AI IDEs · open source
Aider
Open-source AI pair programming in your terminal. It maps your codebase, works in 100+ languages, auto-commits changes, and runs lint and tests.
Best for: Terminal pair programming with automatic git commits and any LLM, including local models.
Pricing
| Free tier | Yes. Free and open source; you pay for whichever model you connect. |
|---|---|
| Paid plans | None. Model costs only. |
| Maker | Aider (open source) |
| Source | https://aider.chat |
| Last verified |
Pros
- Free and open source
- Clean git integration you can easily undo
- Works with cloud or local models
Cons
- Terminal-only workflow isn't for everyone
- The model recommendations on its homepage look out of date
Notable facts
- Homepage lists 44K GitHub stars and 6.8M installs — source
Alternatives
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GitHub Copilot
Teams already on GitHub who want agent mode, cloud agents and code review in their existing IDE.
verified 2026-11-02
Devin (Desktop & Cloud)
Managing several local and cloud coding agents from one IDE, including third-party agents.
verified 2026-11-02
FAQ
Is Aider free?
Yes. Free and open source; you pay for whichever model you connect.
How much does Aider cost?
None. Model costs only.
What is Aider best for?
Terminal pair programming with automatic git commits and any LLM, including local models.
Who makes Aider?
Aider is made by Aider (open source).
Spotted something out of date? Tell us and we'll re-verify. Facts on this page come only from the linked sources.