Aider

AI pair programming in your terminal with GPT-4

IDE & Code Editors Terminal Tools AI Coding

4.7(17 across the web)

What is Aider?

Aider is a ide & code editors tool. Aider turns your terminal into a pair programming session with GPT-4 or Claude. Point it at your codebase and have a conversation about what you want to build or change. The AI sees your files, understands the context, and makes edits directly. Git integration tracks every change so you can review and roll back. Aider is paid-only, with most plans including a trial period. Buyers most often compare Aider against Sourcegraph Cody, Kite, Blackbox AI.

TL;DR - Aider

Aider is an AI pair programming tool that runs in your terminal and edits code directly in your repo
It understands your codebase context and can make changes across multiple files in one conversation
Free and open-source—bring your own API key from OpenAI, Anthropic, or others

Pricing: Paid only

Best for: Enterprises & pros

4.7/5 across review platforms

Pros & Cons

Pros

CLI-based AI coding
Multi-file edits
Git integration
Open source
Many models supported

Cons

Terminal-only
Learning curve
BYOM needed
Not for everyone
API costs

Ratings Across the Web

4.7(17 reviews)

G217 reviews

4.7/5

Ratings aggregated from independent review platforms. Learn more

Key Features

AI pair programmingTerminalGPT-4/ClaudeGit integrationMulti-file editingOpen source

Pricing Plans

Free

Usage-based pricing

MIT license
Bring your own API key
All LLM providers
Local models supported

View full pricing

About Aider

LCLouis CorneloupUpdated May 1, 2026

Aider turns your terminal into a pair programming session with GPT-4 or Claude. Point it at your codebase and have a conversation about what you want to build or change. The AI sees your files, understands the context, and makes edits directly. Git integration tracks every change so you can review and roll back. It handles multi-file refactoring that would take hours manually. Developers using Aider describe it as having a skilled colleague available 24/7. Complex changes that once required careful planning happen through conversation.

How we evaluate tools →Source: aider.chat

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Aider FAQ

Is Aider free?

Yes, Aider is open source and free. You pay for the AI models you use (OpenAI, Anthropic, etc.) but Aider itself is completely free. Install via pip or homebrew.

What is Aider?

Aider is an AI pair programming tool that works in your terminal. It can read your codebase, understand context, and make edits directly to your files. Works with GPT-4, Claude, and other models.

How does Aider work?

Run aider in your project directory. Add files to the chat context, describe what you want, and Aider edits your code directly. It understands your git history and can make commits.

Aider vs GitHub Copilot?

Copilot does inline autocomplete. Aider is conversational and makes larger changes across multiple files. Aider is better for refactoring and feature implementation; Copilot for moment-to-moment coding.

What AI models does Aider support?

Aider works with OpenAI (GPT-4, GPT-3.5), Anthropic (Claude), Azure OpenAI, and local models via Ollama. GPT-4 and Claude give best results for complex code changes.

Source: aider.chat

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