Aider: AI Pair Programming in Your Terminal

Code with AI, Stay in Your Terminal

Not everyone wants to switch to a new editor. If you love your Vim, Emacs, or terminal workflow, Aider brings AI pair programming to you without changing anything about how you work.

Run Aider in your project directory. Describe what you want to build or fix. Aider edits your files directly, creates new ones when needed, and makes clean git commits with descriptive messages.

What Makes Aider Special

It edits files, not just generates text. Most AI coding tools paste code for you to copy. Aider changes your actual files. It understands your codebase structure and makes targeted edits.

Git-aware. Every change is a clean commit. You can review diffs, revert changes, and maintain a clear history. No "AI vomited code everywhere" commits.

Multi-file editing. Need to add a feature that touches five files? Aider handles cross-file changes naturally. It understands imports, references, and dependencies between files.

Repository mapping. Aider builds a map of your entire codebase. It knows what functions exist, what classes are defined, and how files relate to each other. When you ask for a change, it has context.

Model flexible. Works with GPT-4o, Claude, Gemini, DeepSeek, or local models through Ollama. Use whatever model you prefer, switch mid-session.

Real Developer Workflows

Bug fixing. "There is a bug where the user profile page shows the wrong email after updating. The update goes to the API correctly but the page does not refresh." Aider reads the relevant files, identifies the issue, and fixes it.

Feature development. "Add pagination to the blog posts API. Use cursor-based pagination. Update the frontend to show next/previous buttons." Aider modifies backend routes, database queries, and frontend components.

Refactoring. "Extract the email sending logic into its own service class. Update all files that currently send emails directly." Aider handles the extraction and updates all references.

Test writing. "Write unit tests for the user authentication module. Cover login, registration, password reset, and token refresh." Aider creates comprehensive test files.

Getting Started

pip install aider-chat
cd your-project
aider

That is it. Aider detects your project structure, connects to your preferred AI model, and is ready for conversation.

Start with a small task. "Add a docstring to every function in this file." See how Aider handles it. Build trust with small wins before attempting larger features.

The open-source community is active, with frequent updates and new features. Check the leaderboard on aider.chat to see which AI models perform best for coding tasks.

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