Open-source AI pair programming tool that runs in the terminal and edits local Git repos with leading LLMs.
What is Aider?#
Aider is a popular open-source command-line AI pair programmer. You run it from the terminal against your local Git repository and chat with a frontier LLM — Claude, GPT, DeepSeek, Gemini, or a local model — to edit files across the codebase. Aider builds a repo map for context, performs targeted edits, and commits changes with meaningful messages automatically.
What can Aider do?#
- 01
Terminal-based pair programming
Chat with an LLM directly in your terminal to edit your codebase
- 02
Multi-LLM support
Works with Claude, DeepSeek, GPT-4o, o1, o3-mini, plus local models
- 03
Codebase mapping
Builds a repo map so edits stay coherent across larger projects
- 04
100+ language coverage
Handles Python, JavaScript, Rust, Ruby, Go, C++, PHP, HTML, CSS and more
- 05
Auto git commits
Each change is committed with a sensible message so you can diff or undo
- 06
Voice-to-code
Dictate features, tests, or fixes and let aider implement them
- 07
Lint and test loop
Runs linters and tests after edits and fixes problems it finds
- 08
Image and URL context
Attach screenshots, mockups, or doc pages for visual reference
Use Cases#
- Developers — Bootstrap a new project from scratch in their terminal
- Developers — Refactor or extend an existing codebase with LLM-assisted diffs
- Developers — Keep edits reviewable through auto-generated git commits
Quick facts about Aider#
- Pricing
- Open source (BYO API key)$0/moas of Apr 18, 2026View official pricing
- Platforms
- CLI·macOS·Windows·Linux
Aider Traffic Analysis
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