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: Free forever
Best for: Individuals & startups
Score: 82/100
Pricing Plans
Most Popular
Free
Free
Open source
- MIT license
- Bring your own API key
- All LLM providers
- Local models supported
About Aider
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.
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Aider FAQ
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.
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.
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.
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.
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.