Aider
byPaul Gauthierlisted Jun 3, 2026
Aider is the most popular open-source terminal-based coding agent, enabling AI-assisted pair programming directly in your CLI. It maps your repository with a tree-sitter code graph and surgically edits files while automatically creating git commits for every change. Aider supports virtually every major LLM via API and is the go-to choice for developers who want full control without a GUI.
Freshness note: AI-agent behavior can change after model releases, client updates, pricing changes, or new default settings. Use the aggregate score as a historical baseline and check recent reviews plus model/runtime context before deciding.
- Pricing
- Free and open-source; you pay for your own LLM API keys
- Model backbone
- Claude Sonnet, GPT-4o, Gemini Flash (user-configurable)
- Setup complexity
- Moderate setup
- Last reviewed
- Awaiting reviews
- Recent signal
- Awaiting reviews
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